精通: to be well acquainted, have expertise

通暁: to be well versed in something, to be thoroughly acquainted with something

通教: (Buddhism) the second of the Four Doctrines of Tiantai Buddhism: “Shared Teaching”, the teaching of emptiness / 通暁: thorough knowledge of something

痛風: gout

通信社: a news agency

通約: (mathematics) to reduce a fraction to its lowest denominator / 通訳: to interpret (the spoken word)

通約: (mathematics) fractional reduction, reduction of a fraction to its lowest denominator / 通訳: interpreting, interpretation (of the spoken word); an interpreter

通行人: passerby

共通: to share, to have in common

共通: common, shared