guava vs true guava

guava and true guava both are nouns.

Word	Noun	Adjective	Verb	Adverb
guava	Yes	No	No	No
true guava	Yes	No	No	No

As nouns, guava and true guava are synonyms defined as:

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

Other synonyms of guava include guava bush, Psidium guajava.

guava (noun)	true guava (noun)
tropical fruit having yellow skin and pink pulp; eaten fresh or used for e.g. jellies	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
small tropical shrubby tree bearing small yellowish fruit