外柔内剛[gaijuunaigou] gentle but firm
吸金剛[kokongou] Hevajra
金剛[kongou] vajra (indestructible substance)
金剛薩堕[kongousatta] Vajrasattva
金剛手[kongoushu] Vajrapani

金剛石[kongouseki] diamond
剛の者[gounomono] very strong person
剛臆[gouoku] bravery and cowardice
剛果[gouka] valor and decisiveness (valour)
剛毅[gouki] fortitude

臆説[okusetsu] hypothesis
臆念[okunen] something one always remembers
臆病[okubyou] cowardice
臆面[okumen] shy face
臆面もない[okumenmonai] bold

臆面もなく[okumenmonaku] boldly
剛臆[gouoku] bravery and cowardice
臆測[okusoku] guess
臆断[okudan] jumping to hasty conclusions
臆する[okusuru] to be hesitant