tom vs Felis domesticus

tom and Felis domesticus both are nouns.

Word	Noun	Adjective	Verb	Adverb
tom	Yes	No	No	No
Felis domesticus	Yes	No	No	No

As nouns, Felis domesticus is a hypernym of tom; that is, Felis domesticus is a word with a broader meaning than tom:

Other hypernyms of tom include domestic cat, Felis catus, house cat.

tom (noun)	Felis domesticus (noun)
male cat	any domesticated member of the genus Felis
male turkey