conspicuous vs salient

conspicuous is not a noun while salient is a noun.

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

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

conspicuous (adjective)	salient (adjective)
obvious to the eye or mind	(of angles) pointing outward at an angle of less than 180 degrees
without any attempt at concealment; completely obvious	having a quality that thrusts itself into attention
	represented as leaping (rampant but leaning forward)