salience vs visibility

salience and visibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
salience	Yes	No	No	No
visibility	Yes	No	No	No

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

Other hyponyms of salience include conspicuousness, profile.

salience (noun)	visibility (noun)
the state of being salient	quality or fact or degree of being visible; perceptible by the eye or obvious to the eye
	capability of providing a clear unobstructed view
	degree of exposure to public notice