prominent vs striking

prominent is not a noun while striking is a noun.

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

As adjectives, prominent and striking are synonyms defined as:

prominent and striking: having a quality that thrusts itself into attention

Other synonyms of prominent include outstanding, salient, spectacular.

prominent (noun)	striking (noun)
	the act of contacting one thing with another
	the physical coming together of two or more things

prominent (adjective)	striking (adjective)
having a quality that thrusts itself into attention	having a quality that thrusts itself into attention
conspicuous in position or importance	sensational in appearance or thrilling in effect