gardener vs hedger

gardener and hedger both are nouns.

Word	Noun	Adjective	Verb	Adverb
gardener	Yes	No	No	No
hedger	Yes	No	No	No

As nouns, hedger is a hyponym of gardener; that is, hedger is a word with a more specific, narrower meaning than gardener:

Other hyponyms of gardener include groundkeeper, groundskeeper, groundsman.

gardener (noun)	hedger (noun)
someone who takes care of a garden	a gardener who takes care of and trims hedges
someone employed to work in a garden	someone who counterbalances one transaction (as a bet) against another in order to protect against loss
	a respondent who avoids giving a clear direct answer