sorb apple vs sorb apple tree

sorb apple and sorb apple tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
sorb apple	Yes	No	No	No
sorb apple tree	Yes	No	No	No

As nouns, sorb apple and sorb apple tree are synonyms defined as:

sorb apple and sorb apple tree: medium-sized European tree resembling the rowan but bearing edible fruit

Other synonyms of sorb apple include service tree, Sorbus domestica.

sorb apple (noun)	sorb apple tree (noun)
acid gritty-textured fruit	medium-sized European tree resembling the rowan but bearing edible fruit
medium-sized European tree resembling the rowan but bearing edible fruit