prominence vs saliency

prominence and saliency both are nouns.

Word	Noun	Adjective	Verb	Adverb
prominence	Yes	No	No	No
saliency	Yes	No	No	No

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

Other hyponyms of prominence include glare, limelight, public eye, spotlight, salience, strikingness.

prominence (noun)	saliency (noun)
relative importance or fame	the state of being salient
something that bulges out or is protuberant or projects from its surroundings
the state of being prominent: widely known or eminent