ビルはたばこを止めた。

multi-floor building; multi-storey building; bill

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

tobacco; cigarette; cigaret; cigar; tobacco plant (Nicotiana tabacum)

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to stop; to turn off; to park; to prevent; to suppress (a cough); to hold back (tears); to hold (one's breath); to relieve (pain); to stop (someone from doing something); to dissuade; to forbid; to prohibit; to notice; to be aware of; to concentrate on; to pay attention to; to remember; to bear in mind; to fix (in place); to fasten; to tack; to pin; to nail; to button; to staple; to detain; to keep in custody