salient vs prominent

salient is a noun but prominent is not a noun.

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

As adjectives, salient and prominent are synonyms defined as:

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

Other synonyms of salient include outstanding, spectacular, striking.

salient (noun)	prominent (noun)
(military) the part of the line of battle that projects closest to the enemy

salient (adjective)	prominent (adjective)
(of angles) pointing outward at an angle of less than 180 degrees	having a quality that thrusts itself into attention
having a quality that thrusts itself into attention	conspicuous in position or importance
represented as leaping (rampant but leaning forward)