wax palm vs feather palm

wax palm and feather palm both are nouns.

Word	Noun	Adjective	Verb	Adverb
wax palm	Yes	No	No	No
feather palm	Yes	No	No	No

As nouns, feather palm is a hypernym of wax palm; that is, feather palm is a word with a broader meaning than wax palm:

wax palm: palm of the Andes yielding a resinous wax which is mixed with tallow to make candles
feather palm: palm having pinnate or featherlike leaves

wax palm (noun)	feather palm (noun)
palm of the Andes yielding a resinous wax which is mixed with tallow to make candles	palm having pinnate or featherlike leaves
Brazilian fan palm having an edible root; source of a useful leaf fiber and a brittle yellowish wax
South American palm yielding a wax similar to carnauba wax