avocado tree vs avocado

avocado tree and avocado both are nouns.

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

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

avocado tree and avocado: tropical American tree bearing large pulpy green fruits

Other synonyms of avocado tree include Persea Americana.

avocado tree (noun)	avocado (noun)
tropical American tree bearing large pulpy green fruits	a pear-shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed
	tropical American tree bearing large pulpy green fruits

avocado tree (adjective)	avocado (adjective)
	of the dull yellowish green of the meat of an avocado