painter vs mountain lion

painter and mountain lion both are nouns.

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

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

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

painter (noun)	mountain lion (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