Chinese evergreen vs houseplant

Chinese evergreen and houseplant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chinese evergreen	Yes	No	No	No
houseplant	Yes	No	No	No

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

Chinese evergreen: erect or partially climbing herb having large green or variegated leaves
houseplant: any of a variety of plants grown indoors for decorative purposes

Chinese evergreen (noun)	houseplant (noun)
erect or partially climbing herb having large green or variegated leaves	any of a variety of plants grown indoors for decorative purposes