genus Hevea vs rubber tree

genus Hevea and rubber tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Hevea	Yes	No	No	No
rubber tree	Yes	No	No	No

As nouns, genus Hevea and rubber tree are synonyms defined as:

genus Hevea and rubber tree: small genus of South American trees yielding latex

Other synonyms of genus Hevea include Hevea.

genus Hevea (noun)	rubber tree (noun)
small genus of South American trees yielding latex	small genus of South American trees yielding latex