Abyssinian vs domestic cat

Abyssinian and domestic cat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Abyssinian	Yes	No	No	No
domestic cat	Yes	No	No	No

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

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

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

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