forester vs arboriculturist

forester and arboriculturist both are nouns.

Word	Noun	Adjective	Verb	Adverb
forester	Yes	No	No	No
arboriculturist	Yes	No	No	No

As nouns, forester and arboriculturist are synonyms defined as:

Other synonyms of forester include tree farmer.

forester (noun)	arboriculturist (noun)
someone trained in forestry	someone trained in forestry