dairy farming vs agriculture

dairy farming and agriculture both are nouns.

Word	Noun	Adjective	Verb	Adverb
dairy farming	Yes	No	No	No
agriculture	Yes	No	No	No

As nouns, agriculture is a hypernym of dairy farming; that is, agriculture is a word with a broader meaning than dairy farming:

Other hypernyms of dairy farming include farming, husbandry.

dairy farming (noun)	agriculture (noun)
the business of a dairy	the practice of cultivating the land or raising stock
	a large-scale farming enterprise
	the class of people engaged in growing food