catamountain vs Felis silvestris

catamountain and Felis silvestris both are nouns.

Word	Noun	Adjective	Verb	Adverb
catamountain	Yes	No	No	No
Felis silvestris	Yes	No	No	No

As nouns, catamountain and Felis silvestris are synonyms defined as:

catamountain and Felis silvestris: bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat

Other synonyms of catamountain include European wildcat.

catamountain (noun)	Felis silvestris (noun)
bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat	bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat