| 金剛 | こんごう | vajra (indestructible substance), diamond, adamantine; thunderbolt, Indra's weapon, Buddhist symbol of the indestructible truth |
| 剛毅 | ごうき | fortitude, firmness of character, hardihood, manliness |
| 剛 | ごう | strong, hard, manly |
| 剛健 | ごうけん | vigour, vigor, virility, health, sturdiness |
| 外柔内剛 | がいじゅうないごう | gentle but firm |
| 吸金剛 | ここんごう | Hevajra, Eternal Vajra (tantric Buddhist deity) |
| 金剛薩堕 | こんごうさった | Vajrasattva, Supreme Being of tantric Buddhism |
| 金剛手 | こんごうしゅ | Vajrapani, wielder of the vajra |
| 金剛石 | こんごうせき | diamond |
| 剛の者 | ごうのもの | very strong person, brave warrior, veteran |
