lip service; promising but empty talk / skillful completion of a task

a black-backed wagtail (Motacilla alba lugens)

pretty, beautiful

pretty, gorgeous, beautiful / clear, clean, pure / clean, not dirty / tidy, neat, everything put away / fair, impartial, of clear conscience

a vacuum cleaner

cleaning woman; cleaning lady; charwoman

general cleaning (especially one at the end of the year)

clean generally, houseclean

(colloquial) current boyfriend

everything