Dominick vs Gallus gallus

Dominick and Gallus gallus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dominick	Yes	No	No	No
Gallus gallus	Yes	No	No	No

As nouns, Gallus gallus is a hypernym of Dominick; that is, Gallus gallus is a word with a broader meaning than Dominick:

Dominick: American breed of chicken having barred grey plumage raised for meat and brown eggs
Gallus gallus: a domestic fowl bred for flesh or eggs; believed to have been developed from the red jungle fowl

Other hypernyms of Dominick include chicken.

Dominick (noun)	Gallus gallus (noun)
American breed of chicken having barred grey plumage raised for meat and brown eggs	a jungle fowl of southeastern Asia that is considered ancestral to the domestic fowl
	a domestic fowl bred for flesh or eggs; believed to have been developed from the red jungle fowl