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

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