India-rubber tree vs fig tree

India-rubber tree and fig tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
India-rubber tree	Yes	No	No	No
fig tree	Yes	No	No	No

As nouns, fig tree is a hypernym of India-rubber tree; that is, fig tree is a word with a broader meaning than India-rubber tree:

India-rubber tree: large tropical Asian tree frequently dwarfed as a houseplant; source of Assam rubber
fig tree: any moraceous tree of the tropical genus Ficus; produces a closed pear-shaped receptacle that becomes fleshy and edible when mature

India-rubber tree (noun)	fig tree (noun)
large tropical Asian tree frequently dwarfed as a houseplant; source of Assam rubber	any moraceous tree of the tropical genus Ficus; produces a closed pear-shaped receptacle that becomes fleshy and edible when mature