papaw tree vs pawpaw

papaw tree and pawpaw both are nouns.

Word	Noun	Adjective	Verb	Adverb
papaw tree	Yes	No	No	No
pawpaw	Yes	No	No	No

As nouns, papaw tree and pawpaw are synonyms defined as:

papaw tree and pawpaw: small tree native to the eastern United States having oblong leaves and fleshy fruit

Other synonyms of papaw tree include Asimina triloba, papaw.

papaw tree (noun)	pawpaw (noun)
small tree native to the eastern United States having oblong leaves and fleshy fruit	fruit with yellow flesh; related to custard apples
	small tree native to the eastern United States having oblong leaves and fleshy fruit
	tropical American shrub or small tree having huge deeply palmately cleft leaves and large oblong yellow fruit