Assam rubber vs rubber plant

Assam rubber and rubber plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Assam rubber	Yes	No	No	No
rubber plant	Yes	No	No	No

As nouns, Assam rubber and rubber plant are synonyms defined as:

Assam rubber and rubber plant: large tropical Asian tree frequently dwarfed as a houseplant; source of Assam rubber

Other synonyms of Assam rubber include Ficus elastica, India-rubber fig, India-rubber plant, India-rubber tree.

Assam rubber (noun)	rubber plant (noun)
large tropical Asian tree frequently dwarfed as a houseplant; source of Assam rubber	large tropical Asian tree frequently dwarfed as a houseplant; source of Assam rubber