striking vs impact

striking and impact both are nouns.

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

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

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

striking (noun)	impact (noun)
the act of contacting one thing with another	influencing strongly
the physical coming together of two or more things	the violent interaction of individuals or groups entering into combat
	the striking of one body against another
	a forceful consequence; a strong effect

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

striking (verb)	impact (verb)
	have an effect upon
	press or wedge together; pack together