Rivina humilis vs houseplant

Rivina humilis and houseplant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rivina humilis	Yes	No	No	No
houseplant	Yes	No	No	No

As nouns, houseplant is a hypernym of Rivina humilis; that is, houseplant is a word with a broader meaning than Rivina humilis:

Rivina humilis: bushy houseplant having white to pale pink flowers followed by racemes of scarlet berries; tropical Americas
houseplant: any of a variety of plants grown indoors for decorative purposes

Rivina humilis (noun)	houseplant (noun)
bushy houseplant having white to pale pink flowers followed by racemes of scarlet berries; tropical Americas	any of a variety of plants grown indoors for decorative purposes