gloxinia vs houseplant

gloxinia and houseplant both are nouns.

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

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

gloxinia: any of several plants of the genera Gloxinia or Sinningia (greenhouse gloxinias) having showy bell-shaped flowers
houseplant: any of a variety of plants grown indoors for decorative purposes

gloxinia (noun)	houseplant (noun)
any of several plants of the genera Gloxinia or Sinningia (greenhouse gloxinias) having showy bell-shaped flowers	any of a variety of plants grown indoors for decorative purposes