Psidium guajava vs guava bush

Psidium guajava and guava bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Psidium guajava	Yes	No	No	No
guava bush	Yes	No	No	No

As nouns, Psidium guajava and guava bush are synonyms defined as:

Psidium guajava and guava bush: small tropical American shrubby tree; widely cultivated in warm regions for its sweet globular yellow fruit

Other synonyms of Psidium guajava include guava, true guava.

Psidium guajava (noun)	guava bush (noun)
small tropical American shrubby tree; widely cultivated in warm regions for its sweet globular yellow fruit	small tropical American shrubby tree; widely cultivated in warm regions for its sweet globular yellow fruit