larch tree vs larch

larch tree and larch both are nouns.

Word	Noun	Adjective	Verb	Adverb
larch tree	Yes	No	No	No
larch	Yes	No	No	No

As nouns, larch tree and larch are synonyms defined as:

larch tree and larch: any of numerous conifers of the genus Larix all having deciduous needlelike leaves

larch tree (noun)	larch (noun)
any of numerous conifers of the genus Larix all having deciduous needlelike leaves	any of numerous conifers of the genus Larix all having deciduous needlelike leaves
	wood of a larch tree