撃墜[gekitsui] shooting down (aircraft)
失墜[shittsui] abasement
墜死[tsuishi] falling to one's death
墜落[tsuiraku] falling
墜ちる[ochiru] to fall down

墜落事故[tsuirakujiko] a plane crash
墜つ[otsu] to fall down
人気失墜[ninkishittsui] decline in public favor
墜子[iwa] weight (of a fishing net)
巨星墜つ[kyoseiotsu] death of a great man