great gross vs large integer

great gross and large integer both are nouns.

Word	Noun	Adjective	Verb	Adverb
great gross	Yes	No	No	No
large integer	Yes	No	No	No

As nouns, large integer is a hypernym of great gross; that is, large integer is a word with a broader meaning than great gross:

great gross (noun)	large integer (noun)
a cardinal number equal to one dozen gross	an integer equal to or greater than ten