collide

verb4

1. •
   To make a direct impact, especially if violent.

   • When a body collides with another, then momentum is conserved.
2. •
   To cause to collide.
3. •
   To come into conflict, or be incompatible.

   • China collided with the modern world.
4. •
   (literary) To meet; to come into contact.

   • Out of the doubts that fill my mind / I somehow find, you and I collide — 2004