viticulturist vs agriculturist

viticulturist and agriculturist both are nouns.

Word	Noun	Adjective	Verb	Adverb
viticulturist	Yes	No	No	No
agriculturist	Yes	No	No	No

As nouns, agriculturist is a hypernym of viticulturist; that is, agriculturist is a word with a broader meaning than viticulturist:

viticulturist: a cultivator of grape vine
agriculturist: someone concerned with the science or art or business of cultivating the soil

Other hypernyms of viticulturist include agriculturalist, cultivator, grower, raiser.

viticulturist (noun)	agriculturist (noun)
a cultivator of grape vine	someone concerned with the science or art or business of cultivating the soil