G4431–πτῶσις–ptōsis

and the rain descended, and the floods came, and the winds blew, and smote upon that house; and it fell: and great was the fall thereof.

πτῶσις ptōsis “fall”

and Simeon blessed them, and said unto Mary his mother, Behold, this [ergänzt: child] is set for the falling and the rising of many in Israel; and for a sign which is spoken against;

πτῶσιν ptōsin “[the] falling”