Verb

(en verb)

To act or perform a second time; to do over again; to reenact.

to react''' a play; the same scenes were '''reacted at Rome

To return an impulse or impression; to resist the action of another body by an opposite force; as, every body reacts on the body that impels it from its natural state.

To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

Verb

(collid)

To impact directly, especially if violent

When a body collides with another, then momentum is conserved.

* Tyndall

Across this space the attraction urges them. They collide , they recoil, they oscillate.

* Carlyle

No longer rocking and swaying, but clashing and colliding .

* {{quote-news

, year=2012 , date=June 2 , author= Phil McNulty , title=England 1-0 Belgium , work=BBC Sport citation , page= , passage=And this friendly was not without its injury worries, with defender Gary Cahill substituted early on after a nasty, needless push by Dries Mertens that caused him to collide with goalkeeper Joe Hart, an incident that left the Chelsea defender requiring a precautionary X-ray at Wembley.}}

To come into conflict, or be incompatible

China collided with the modern world.