nectarine vs nectarine tree

nectarine and nectarine tree both are nouns.

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

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

nectarine and nectarine tree: variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh

Other synonyms of nectarine include Prunus persica nectarina.

nectarine (noun)	nectarine tree (noun)
a variety or mutation of the peach that has a smooth skin	variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh
variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh