I.
noun
ADJECTIVE
▪ high , high-rise ( BrE ), lofty ( literary ), massive , tall
▪ two-storey/two-story , 20-storey/20-story , etc.
▪ 30-foot , 100-foot , etc.
▪ round , square
▪ ancient , Gothic , medieval
▪ fortified
▪ ruined
▪ control , guard , lookout , observation , watch (usually watchtower )
▪
Armed guards manned the lookout ~s.
▪ bell , clock
▪ cooling , water
▪ cell , cellphone (both AmE )
▪ radio , television
▪ apartment , office , residential (all esp. AmE )
▪ conning ( esp. BrE )
▪
the conning ~ of a submarine
▪ castle , cathedral , church
▪ glass
▪ ivory ( figurative )
▪
academics sitting in their ivory ~s
TOWER + VERB
▪ collapse , fall
▪ stand
▪
the spot where the ~s once stood
TOWER + NOUN
▪ block ( BrE )
II.
verb
Tower is used with these nouns as the subject: ↑ cliff , ↑ mountain , ↑ peak