(1):
(n.) Opposition; contradiction; as between differing or contending interests, views, purposes, etc.
(2):
(n.) A loud noise resulting from collision; a noisy collision of bodies; a collision.
(3):
(v. i.) To meet in opposition; to act in a contrary direction; to come onto collision; to interfere.
(4):
(v. i.) To make a noise by striking against something; to dash noisily together.
(5):
(v. t.) To strike noisily against or together.