wildcat vs Felis

wildcat and Felis both are nouns.

Word	Noun	Adjective	Verb	Adverb
wildcat	Yes	Yes	No	No
Felis	Yes	No	No	No

wildcat (noun)	Felis (noun)
any small or medium-sized cat resembling the domestic cat and living in the wild	type genus of the Felidae: true cats and most wildcats
an exploratory oil well drilled in land not known to be an oil field
a cruelly rapacious person

wildcat (adjective)	Felis (adjective)
(of a mine or oil well) drilled speculatively in an area not known to be productive
without official authorization
outside the bounds of legitimate or ethical business practices