trowel vs garden trowel

trowel and garden trowel both are nouns.

Word	Noun	Adjective	Verb	Adverb
trowel	Yes	No	Yes	No
garden trowel	Yes	No	No	No

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

trowel: a small hand tool with a handle and flat metal blade; used for scooping or spreading plaster or similar materials
garden trowel: a trowel used by gardeners

Other hyponyms of trowel include brick trowel, mason's trowel, plastering trowel, pointing trowel, slick.

trowel (noun)	garden trowel (noun)
a small hand tool with a handle and flat metal blade; used for scooping or spreading plaster or similar materials	a trowel used by gardeners

trowel (verb)	garden trowel (verb)
use a trowel on; for light garden work or plaster work