Think of this as the Big Repository of Terminology. Also names.

The NA version isn't always consistent, so I've tried to list the most common term there. The original purpose of this chart is to aid consistency in the retranslation, but it may also be interesting for itself.

Check the item table for anything that shows up in inventory, the location table for locations, and the enemy table for anything you fight.

Underscores are wildcards for whatever makes sense.

NA version	JP version	KWhazit version	Comments (if any)

Characters, B.C. 65 million
Ayla	エイラ	Ayla	default name
Woman	女	Woman	Ayla before she's named
Kino	キーノ	Kino
Crono	クロ	Cro	Assuming default name. In the Japanese version, Ayla calls Crono by the first two characters in his name.
Crono, you, etc.	クロ達	Cros	More literally, 'Cro and the others' or 'the group containing Cro', using Ayla's primitive speech as an excuse to use incorrect English that's easy to understand. name+'tachi' is very common in Japanese but has no good English equivalent.
ape	サル	monkey	The Reptite/Dinomen name for humans. Could be either 'ape' or 'monkey'. I just think 'monkey' sounds better.
Old Man	長老	Elder
Guard	見張り	Lookout
Jailer	牢番	Jailer

Things and Groups, B.C. 65 million
soup	岩石クラッシュ	Rock Crash
(varies)	大地のおきて	Law of the Earth
Dactyl	プテラン	Pteran

Characters, B.C. 12,000
Alfador	アルファド	Alphard	The brightest star in Hydra, from Arabic meaning "solitary one".
Guru of Life	命の賢者	Philosopher of Life
Schala	サラ	Sara
Schala	サラ様	Sara-sama
(three) Gurus	三賢者様	Three Philosophers
Queen Zeal	ジール女王	Queen Zeal
Janus	ジャキ	Jyaki
Janus	ジャキ様	Jyaki-sama
Boy	少年	Boy	Janus/Jyaki before he's named
Queen	女王	Queen	refers specifically to a ruling queen
Elder	長老	Elder
Guru of Time	時の賢者	Philosopher of Time
Doreen	ドリーン	Doreen	almost-not-quite 'dream'
Mountain of Woe	なげきの山	Grief Mountain
Soldier	兵士	Soldier
Prophet	予言者	Prophet
Guru of Reason	理の賢者	Philosopher of Reason

Things and Groups, B.C. 12,000
Algetty	アルゲティ	Algetty
GolemTwins	ゴーレム・シスターズ	Golem Sisters
Zeal Kingdom	ジール王国	Zeal Kingdom
Aero-Dalton Imperial	スカイ・ダルトン・ギョクーザ	Sky Dalton Throne
Sun Keep	太陽神殿	Sun Temple
Earthbound Ones	地の民	People of the Earth
Skyway	天の道	Sky Road
Beast's nest	ドロクイの巣	Mud-Eater nest
Enlightened Ones	光の民	People of the Light

Characters, A.D. 600
King	王	King
Maid	おかみさん	Wife	the cook's wife
Queen	王妃	Queen
Queen	王妃様	Queen	same as above but more respectful
Frog	カエル	Frog	also wordplay on a verb for 'transform', and a few other words.
King Guardia	ガルディア王	King Guardia
King Guardia XXI	ガルディア王２１世	King Guardia the 21st
Knight Captain	騎士団長	Knight Captain
the magician Flea	空魔士マヨネー	the Void Mage Mayonnay	マヨネー (MAYONEE) isn't quite mayonnaise -- that would be マヨネーズ (MAYONEEZU).
Masa	グラン	Gran
Glenn	グレン	Glenn
the swordsman Slash, Sir Slush	外法剣士ソイソー	the Dark Arts Swordsman Soysaw	Two dictionary entries might apply to 外法: one is a Buddhist term for heresy, the other is a sort of demonic arts linked to tengu or using skulls. Credit goes to J.K.Rowling's Harry Potter books for giving me the idea to use 'dark arts'. Also, ソイソー (SOI SOO) isn't quite soy sauce -- that would be ソイソース (SOISOOSU), or more often 醤油 (shouyu). Soyso is closer to a normal Romanization, but doesn't work with English phonetics.
Frog King	ゴールデンフロッグ	Golden Frog
Child	子供	Child	Mune/Leon before he's named
Cyrus	サイラス	Cyrus
Boy	少年	Boy	the would-be hero
Headman	村長	Chief	village leader
Tata	タータ	Tarta	タータ (TAATA) isn't quite tartar -- that would be タルタル (TARUTARU) when referring to the sauce.
Tata's Father	タータの父	Tarta's Father
Trainees	大工みならい	apprentice carpenters
Chancellor	大臣	Chancellor
Toma	トマ	Toma
Ozzie	ビネガー	Vinnegar	Unlike the other condiment names this one really IS vinegar... but it would normally be 酢 (su) in Japanese.
Fiona	フィオナ	Fiona
Soldier	兵士	Soldier
Real Chancellor	本物の大臣	Real Chancellor
Magus	魔王	Magus	This is a TITLE, not a name, and roughly translates to 'Demon King'.
Marco	マルコ	Marco
Attendant	めし使い	Servant
Hero	勇者	Hero
Hero	勇者様	Hero	same as above but more respectful
Leene	リーネ	Leene
Queen Leene	リーネ王妃	Queen Leene
Queen Leene	リーネ王妃様	Queen Leene-sama
Queen Leene	リーネ様	Leene-sama
Mune	リオン	Leon
Chef	料理長	Head Cook

Things and Groups, A.D. 600
Knights of the Square Table	王国騎士団	Royal Knights
Knights of the Square Table	ガルディア王国騎士団	Guardia Royal Knights
knights	騎士団	Knights
Rainbow Shell	虹色の貝がら	Rainbow-Colored Shell
Nirvana Strike	ニルヴァーナ・スラーッシュ	Nirvana Slash
Magus's army / troops	魔王軍	Magus's army

Characters, A.D. 1000
Elaine	エレイン	Elaine
King	王	King
King Guardia	ガルディア王	King Guardia
King Guardia XXXIII	ガルディア王３３世	King Guardia the 33rd
Crono	クロノ	Crono	default name
Judge	裁判長	Presiding Judge
Mom	ジナ	Jina	Yes, she has a name.
Girl	少女	Girl	Marle before she's named. I had used 'young woman', but if 'shounen' is 'boy' (for Tata/Tarta and Jyaki/Janus), 'shoujo' is 'girl', and besides, it's shorter.
Supervisor	所長	Director	The guy who runs the prison
Taban	タバン	Taban
Chancellor	大臣	Chancellor
Norstein Bekkler	ノルシュテイン・ベッケラー	Norstein Bekkeler
Bandeau	バンドー	Bandor	Could be Bandeau, if 'eau' is pronounced like a long o. I'm not much good with French... that is French, isn't it?
Pierre	ピエール	Pierre
Ozzie VIII	ビネガー８世	Vinnegar the 8th	Unlike the other condiment names this one really IS vinegar... but it would normally be 酢 (su) in Japanese.
Fritz	フリッツ	Fritz
Soldier	兵士	Soldier
Melchior	ボッシュ	Bosch
Marle	マール	Marle	default name
Princess Nadia	マールディア王女	Princess Marledia	Assuming default name. In the Japanese version, her full name is the name you give her (with any characters past the third dropped) plus 'dia'. If you have odd tastes in naming, her name could even be Cronodia (but not if you keep Crono as Crono... at least not if both are katakana).
Princess Nadia	マールディア王女様	Princess Marledia-sama
Lara	ララ	Lara	...but 'LALA' to stop the machine.
Lucca	ルッカ	Lucca	default name

Things and Groups, A.D. 1000
Guardia R & D	ガルディア王国開発部より	Guardia Kingdom Development Dept.
Super Dimension Warp	超次元物質転送マシン１号	Ultra Dimensional Matter-Transfer Machine #1
Zonker-38	使いすてドッカンばくはつピスト	Disposable Explosion Blast Pistol
Telepod	テレポッド	Telepod
Leene's Bell	リーネの鐘	Leene's Bell

Events, A.D. 1000
fair (?)	お祭り	festival
Millenial Fair	建国千年のお祭り	National Foundation Millenial Festival

Characters, A.D. 2300
Atropos	アトロポス	Atropos
The Man	アニキ	Boss
R6_-Y	Ｒ６_ーＹ	R6_-Y
Boss	おやぶん	Boss
Belthasar	ガッシュ	Gasch
Underling	こぶん	Lackey
Johnny	ジョニー	Johnny
Doan	ドン	Don
Strange Creature	なぞの物体	Enigmatic Object
Guard	みはり	Lookout
Old Man	老人	Old Man
Robo	ロボ	Robo	default name
Robot	ロボット	Robot	Robo before naming, also generic robots.

Things and Groups, A.D. 2300
Enertron	エナ・ボックス	EnerBox
Jet Bike	ジェットバイク	Jet Bike
seed	種子	seeds

Events, A.D. 2300
Day of Lavos	ラヴォスの日	Day of Lavos

Characters, Beyond Time
sweetheart	セクシーなネーちゃん	sexy babe	Spekkio's description of Ayla
Master of War	戦の神	God of war
punk hairdo, etc.	ツンツン頭	pointy head	Spekkio's description of Crono
the biggest toy I've ever seen	デッカい人形	hugeass doll	Spekkio's description of Robo
a marlin	どエラいヤツ	really something else	Spekkio's description of Magus
Gaspar	ハッシュ	Hasch
the one with the ponytail	ポニーテールのギャル	ponytailed girl	Spekkio's description of Marle
weird fellow	またヘンなの	another weird one	Spekkio's description of Frog
the one with goofy glasses	メガネのネーちゃん	glasses chick	Spekkio's description of Lucca
Old Man	老人	Old Man

Weapons
sword	刀	katana	Crono's weapon
gun	けんじゅう	gun	Lucca's
bow	ゆみ	bow	Marle's

Status Effects
chaos	こんらん	confusion
stop	ストップ	stop
sleep	スリープ	sleep
slow	スロウ	slow
disabled (usually reworded out)	戦闘不能	incapacitated
poison	毒	poison
blind	ブラインド	blind
lock	ロック	lock

Eras (as shown in saves)
???	？？？	? ? ?
Present	現代	Present
Middle Ages	中世	Middle Ages
Future	近未来	Near Future
Pre-historic	原始	Primeval
Dark Ages	古代	Ancient Era
Black Omen	黒の夢あ	Black Dream
End of Time	最果て	Farthest Reaches	(...of time)

Special Terms, General
year ___	王国暦___年	Kingdom Year ___	The reference point for dates is the founding of Guardia Kingdom, hence Kingdom Year and not just year. It's like how some countries date things by the current ruler or ruling family.
Reptites	恐竜人	Dinomen	Literally dinosaur-person
the black wind	黒い風	the black wind
the Chrono Trigger	クロノ・トリガー	the Chrono Trigger
Gate	ゲート	Gate
pop (Toma), soup (Ayla), etc.	酒	sake (rice wine, or alcohol in general)
(?)	時代	era
Epoch	シルバード	Sylbird
(varies)	精神エネルギー	spiritual energy
(varies)	大地	(the) earth	often used in a way that seems like it's a special term
lightning	天	sky	Crono's element
Wings of Time	時をわたる翼	Wings that Cross Time
friend	仲間	companion	It's not quite the same as either 'ally' or 'friend'. 'Comrade' is close, but that sounds too much like Soviet Russia. The US version of FFVII uses "war buddy" in Cloud's flashback for what is probably this term.
humanoid	人間型	humanoid	used several times to describe Robo
fire	火	fire	Lucca's element
Mystic	魔族	Demon	...more or less.
magic	魔法	magic
beast / monster	魔物	monster
(varies)	魔力	magical power
water	水	water	Marle and Frog's element
shadow	冥	dark	Magus's element
crest	紋章	crest	the term is also used for a coat of arms
him, etc.	ヤツ	IT	how Magus generally refers to Lavos
technique / tech	技	technique (tech for short)
tech points	わざポイント	tech points