mountain lion vs painter

mountain lion and painter both are nouns.

Word	Noun	Adjective	Verb	Adverb
mountain lion	Yes	No	No	No
painter	Yes	No	No	No

As nouns, mountain lion and painter are synonyms defined as:

Other synonyms of mountain lion include catamount, cougar, Felis concolor, panther, puma.

mountain lion (noun)	painter (noun)
large American feline resembling a lion	large American feline resembling a lion
	a line that is attached to the bow of a boat and used for tying up (as when docking or towing)
	an artist who paints
	a worker who is employed to cover objects with paint