[じ, ji] (n) (1) thing; matter; (2) incident; occurrence; event; something serious; trouble; crisis; (3) circumstances; situation; state of affairs; (4) work; business; affair; (5) after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; (n-suf) (6) (See 事・ごと・1) nominalizing suffix; (7) (See 事・ごと・2) pretending to ...; playing make-believe ...; (P)#353
[アリバイがいしゃ, aribai gaisha] (n) (See ダミー会社) front company set up to hide someone's true profession by pretending to employ them (often used by call girls)
[げだいがくもん, gedaigakumon] (n) putting on a knowing air when one only knows the title of the book (play, etc.); pretending to understand the nature of something when one only knows its name