close friend, bosom buddy / crony, chum

(chiefly women's speech) first person singular pronoun: I, me

建て前, 建前: erection of house framework; principle, rule, one's position; one's words (as opposed to one's real intentions)

建物: a building

建屋: building or structure for housing heavy machinery

立: the number of rounds or matches in a competition; the number of acts in a kabuki play; the number of losses in a losing streak

立, 立て: a party or banquet; treating others to food and/or drink; the general meaning or gist of something; a rule or regulation; the lead in a musical ensemble

立, 立て: prefixed to a person or role: the head or lead in a group; prefixed to a verb: an intensifier

立, 立て: just [verbed]

noun suffix indicating that something is newly made, newly built, newly born, etc.