pitahaya cactus vs pitahaya

pitahaya cactus and pitahaya both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitahaya cactus	Yes	No	No	No
pitahaya	Yes	No	No	No

As nouns, pitahaya cactus and pitahaya are synonyms defined as:

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

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

pitahaya cactus (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