viticulturist vs raiser

viticulturist and raiser both are nouns.

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

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

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

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

viticulturist (noun)	raiser (noun)
a cultivator of grape vine	someone concerned with the science or art or business of cultivating the soil
	a bridge partner who increases the partner's bid