papaya vs papaya tree

papaya and papaya tree both are nouns.

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

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

papaya and papaya tree: tropical American shrub or small tree having huge deeply palmately cleft leaves and large oblong yellow fruit

Other synonyms of papaya include Carica papaya, melon tree, papaia, pawpaw.

papaya (noun)	papaya tree (noun)
large oval melon-like tropical fruit with yellowish flesh	tropical American shrub or small tree having huge deeply palmately cleft leaves and large oblong yellow fruit
tropical American shrub or small tree having huge deeply palmately cleft leaves and large oblong yellow fruit