salt lick vs lick

salt lick and lick both are nouns.

Word	Noun	Adjective	Verb	Adverb
salt lick	Yes	No	No	No
lick	Yes	No	Yes	No

As nouns, salt lick and lick are synonyms defined as:

salt lick (noun)	lick (noun)
a salt deposit that animals regularly lick	touching with the tongue
	(boxing) a blow with the fist
	a salt deposit that animals regularly lick

salt lick (verb)	lick (verb)
	find the solution to (a problem or question) or understand the meaning of
	take up with the tongue
	pass the tongue over
	beat thoroughly and conclusively in a competition or fight