Abyssinian cat vs Felis catus

Abyssinian cat and Felis catus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Abyssinian cat	Yes	No	No	No
Felis catus	Yes	No	No	No

As nouns, Felis catus is a hypernym of Abyssinian cat; that is, Felis catus is a word with a broader meaning than Abyssinian cat:

Abyssinian cat: a small slender short-haired breed of African origin having brownish fur with a reddish undercoat
Felis catus: any domesticated member of the genus Felis

Other hypernyms of Abyssinian cat include domestic cat, Felis domesticus, house cat.

Abyssinian cat (noun)	Felis catus (noun)
a small slender short-haired breed of African origin having brownish fur with a reddish undercoat	any domesticated member of the genus Felis