一介[ikkai] mere
荷厄介[niyakkai] encumbrance
介して[kaishite] through the medium of
介意[kaii] worrying about
介殻[kaikaku] sea shell

介護[kaigo] nursing
介甲[kaikou] crust-like shell
介在[kaizai] mediation
介錯[kaishaku] suicide assistant
介添え[kaizoe] helper

せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
挨拶状[aisatsujou] greeting card
依頼状[iraijou] written request
委任状[ininjou] commission
異状[ijou] something wrong

遺言状[yuigonjou] will
渦状[kajou] spiral
液状[ekijou] liquid state
円盤状[enbanjou] disk-shaped
仮免状[karimenjou] temporary certificate

自己紹介[jikoshoukai] self-introduction
紹介[shoukai] introduction
紹介者[shoukaisha] person who introduces someone
紹介状[shoukaijou] letter of introduction
新刊紹介[shinkanshoukai] book review

紹介文[shoukaibun] introductory essay
紹興酒[shoukoushu] shaoxingjiu (Chinese alcohol made from rice or glutinous millet)
人材紹介会社[jinzaishoukaikaisha] employment agency
他己紹介[takoshoukai] introduction of someone else
紹介記事[shoukaikiji] introductory article