plectranthus vs houseplant

plectranthus and houseplant both are nouns.

Word	Noun	Adjective	Verb	Adverb
plectranthus	Yes	No	No	No
houseplant	Yes	No	No	No

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

plectranthus: any of various ornamental plants of the genus Plectranthus
houseplant: any of a variety of plants grown indoors for decorative purposes

plectranthus (noun)	houseplant (noun)
any of various ornamental plants of the genus Plectranthus	any of a variety of plants grown indoors for decorative purposes