Clashing

Sami and Layla were clashing all the time.

America isn't just a collection of clashing interests of Red States or Blue States.

They avoided clashing colors.

A legion of anthropomorphic foxes is clashing with an army of orcs.

Clashing ideas can foster deeper insights.

From inside the mill there came a whizzing, whirring, and clashing sound, and now and then a bright saw-blade flashed in the air, as if in combat with the spirits of the night, to cut the stumps and uneven ends off the logs.