gross revenue vs gross sales

gross revenue and gross sales both are nouns.

Word	Noun	Adjective	Verb	Adverb
gross revenue	Yes	No	No	No
gross sales	Yes	No	No	No

As nouns, gross revenue and gross sales are synonyms defined as:

gross revenue and gross sales: income (at invoice values) received for goods and services over some given period of time

Other synonyms of gross revenue include sales.

gross revenue (noun)	gross sales (noun)
income (at invoice values) received for goods and services over some given period of time	income (at invoice values) received for goods and services over some given period of time