Acanthocereus tetragonus vs pitahaya

Acanthocereus tetragonus and pitahaya both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acanthocereus tetragonus	Yes	No	No	No
pitahaya	Yes	No	No	No

As nouns, Acanthocereus tetragonus and pitahaya are synonyms defined as:

Acanthocereus tetragonus and pitahaya: cactus of the southwestern United States and northern Mexico having edible juicy fruit

Other synonyms of Acanthocereus tetragonus include Acanthocereus pentagonus, pitahaya cactus.

Acanthocereus tetragonus (noun)	pitahaya (noun)
cactus of the southwestern United States and northern Mexico having edible juicy fruit	highly colored edible fruit of pitahaya cactus having bright red juice; often as large as a peach
	cactus of the southwestern United States and northern Mexico having edible juicy fruit