fruit grower vs agriculturist

fruit grower and agriculturist both are nouns.

Word	Noun	Adjective	Verb	Adverb
fruit grower	Yes	No	No	No
agriculturist	Yes	No	No	No

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

fruit grower: someone who grows fruit commercially
agriculturist: someone concerned with the science or art or business of cultivating the soil

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

fruit grower (noun)	agriculturist (noun)
someone who grows fruit commercially	someone concerned with the science or art or business of cultivating the soil