striking vs collision

striking and collision both are nouns.

Word	Noun	Adjective	Verb	Adverb
striking	Yes	Yes	No	No
collision	Yes	No	No	No

As nouns, collision is a hyponym of striking; that is, collision is a word with a more specific, narrower meaning than striking:

striking: the physical coming together of two or more things
collision: (physics) a brief event in which two or more bodies come together

Other hyponyms of striking include hit, engagement, interlocking, mesh, meshing, flick, impact, touch, touching.

striking (noun)	collision (noun)
the act of contacting one thing with another	a conflict of opposed ideas or attitudes or goals
the physical coming together of two or more things	an accident resulting from violent impact of a moving object
	(physics) a brief event in which two or more bodies come together

striking (adjective)	collision (adjective)
having a quality that thrusts itself into attention
sensational in appearance or thrilling in effect