Carica papaya vs melon tree

Carica papaya and melon tree both are nouns.

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

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

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

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

Carica papaya (noun)	melon tree (noun)
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