金剛 (こんごう)vajra (indestructible substance); diamond; adamantine

vajra (indestructible substance); diamond; adamantinenoun (common) (futsuumeishi)
thunderbolt; Indra's weapon; Buddhist symbol of the indestructible truthnoun (common) (futsuumeishi)

金剛, its kanji, and other words that share them.Open this graph

Kanji in 金剛

献金けんきんdonation; contribution
資金しきんfunds; capital
金利きんりinterest rate; interest
金融きんゆうfinance; financing
基金ききんfund; foundation
年金ねんきんannuity; pension
料金りょうきんfee; charge
現金げんきんcash; ready money
剛健ごうけんvigour; vigor
剛毅ごうきfortitude; firmness of character
せん断剛性せんだんごうせいshear modulus
内剛ないごうtough at heart
内剛外柔ないごうがいじゅうgentle on the outside but tough on the inside; an iron hand in a velvet glove
内柔外剛ないじゅうがいごうtough on the outside but soft at heart
冷剛れいごうchilling (steel)
剛ごうstrong; hard

See how 金剛 connects to the rest of Japanese.