aile: affaire de cœur, affairiste, avoir affaire à, faire l'affaire, faire son affaire, hors d'affaire, la belle affaire, lâcher l'affaire, se mêler de ses affaires, s'occuper de ses affaires
broadly, any abstract thing, affair, matter, or fact · act of (word used for the nominalization of verbs, adjectives, or phrases) · experience, having been or done (used with ある (aru, “have, possess”))
köken: From Old Japanese, from Proto-Japonic *kətə. Cognate with 言 (koto, “word”).
a matter, an errand (purpose of a small trip), an issue, a task, a work item (in a workflow)
çekim: çoğul ärenden · tamlayan ärendes
köken: From Old Swedish ærande, ærinde, ærende, from Old Norse erendi, ørendi, eyrendi (“errand”), from Proto-Germanic *airundiją. Cognate with Danish ærinde, Norwegian ærend, dialectal German Erend and English errand.
topic, subject, theme · reason, cause, grounds, justification · motif (recurring or dominant element in a work of art)
çekim: çoğul aiheet · tamlayan aiheen
köken: Probably via metathesis from ajaa (“to drive, pursue”) + -e (*ajeh), "that which spurs or drives on" > "reason". May also be inspired by aie. Another theory proposes a borrowing from an earlier (Pre-Germanic) form of Proto-Germanic *aiz (“copper, bronze”) (like *ajes- → *aješ > *ajeh), but the semantics and distribution make this questionable.