India-rubber plant vs rubber plant

India-rubber plant and rubber plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
India-rubber plant	Yes	No	No	No
rubber plant	Yes	No	No	No

As nouns, India-rubber plant and rubber plant are synonyms defined as:

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

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

India-rubber plant (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