CLASH

To make a noise by striking against something; to dash noisily together.

To meet in opposition; to act in a contrary direction; to come onto collision; to interfere. However some of his interests might clash with those of the chief adjacent colony. Palfrey.

To strike noisily against or together.

A loud noise resulting from collision; a noisy collision of bodies; a collision. The roll of cannon and clash of arms. Tennyson.

Opposition; contradiction; as between differing or contending interests, views, purposes, etc. Clashes between popes and kings. Denham.