hemiepiphyte vs air plant

hemiepiphyte and air plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemiepiphyte	Yes	No	No	No
air plant	Yes	No	No	No

As nouns, air plant is a hypernym of hemiepiphyte; that is, air plant is a word with a broader meaning than hemiepiphyte:

hemiepiphyte: a plant that is an epiphyte for part of its life
air plant: plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it

Other hypernyms of hemiepiphyte include aerophyte, epiphyte, epiphytic plant.

hemiepiphyte (noun)	air plant (noun)
a plant that is an epiphyte for part of its life	plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it