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Most common first
Japanese order (あいうえお)
Romaji (A–Z)
JLPT level (easy → hard)
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Word family of 硬
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硬貨
こうか
Common word
N3
Nouns
coin · hard currency
強硬
きょうこう
Common word
N1
な-adjectives
firm; strong; hard-line; uncompromising
硬化
こうか
Common word
N1
Nouns
hardening; stiffening; solidifying · hardening (of attitude); stiffening; toughening · upturn (in the market); firming up
硬式
こうしき
Common word
Nouns
hard type; hardball; hard (tennis)
硬直
こうちょく
Common word
Nouns
stiffening; rigidity; ossification
硬派
こうは
Common word
Nouns
hard-liners; diehards; hawks · tough guy; man's man; traditionally masculine man · hard news; political/economic reporter · strait-laced; conservative in relationships · bullish traders
硬度
こうど
Common word
Nouns
hardness; solidity
硬質
こうしつ
Common word
Nouns
hardness; stiffness; rigidity
肝硬変
かんこうへん
Common word
Nouns
cirrhosis of the liver; hepatic cirrhosis
硬水
こうすい
Nouns
hard water
硬筆
こうひつ
Nouns
pen or pencil; hard-tipped writing implement
硬軟
こうなん
Nouns
hardness and softness; hard line and moderate line
硬性
こうせい
Nouns
hardness
硬球
こうきゅう
Nouns
hard ball; regulation ball
生硬
せいこう
な-adjectives
crude; immature; unpolished
硬券
こうけん
Nouns
hard ticket; cardboard ticket
硬化ゴム
こうかゴム
Nouns
vulcanite; ebonite
硬化油
こうかゆ
Nouns
hydrogenated oil; hardened oil
硬口蓋
こうこうがい
Nouns
hard palate
硬変
こうへん
Nouns
cirrhosis
ロックウェル硬度
ロックウェルこうど
Nouns
Rockwell hardness
モース硬度
モースこうど
Nouns
Mohs hardness
硬木
こうぼく
Nouns
hardwood
硬材
こうざい
Nouns
hardwood
硬毛
こうもう
Nouns
terminal hair; bristle
硬玉
こうぎょく
Nouns
jadeite
硬盤
こうばん
Nouns
hardpan
硬石けん
こうせっけん
Nouns
hard soap; soda soap
硬石膏
こうせっこう
Nouns
anhydrite
硬結
こうけつ
Nouns
induration; hardening
硬膏
こうこう
Nouns
plaster; adhesive plaster; medical plaster
硬膜
こうまく
Nouns
dura mater; dura
硬葉樹
こうようじゅ
Nouns
sclerophyllous tree
硬葉樹林
こうようじゅりん
Nouns
sclerophyll forest; hardwood forest
硬調
こうちょう
Other
high-contrast; hard tone · bullish; firm
硬タンパク質
こうタンパクしつ
Nouns
scleroprotein
硬質ゴム
こうしつゴム
Nouns
hard rubber; ebonite; vulcanite
硬質ガラス
こうしつガラス
Nouns
hard glass; hardened glass
硬鋼
こうこう
Nouns
hard steel
硬鑞
こうろう
Nouns
hard solder
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