tabby cat vs domestic cat

tabby cat and domestic cat both are nouns.

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

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

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

tabby cat (noun)	domestic cat (noun)
a cat with a grey or tawny coat mottled with black	any domesticated member of the genus Felis