needle palm vs yucca

needle palm and yucca both are nouns.

Word	Noun	Adjective	Verb	Adverb
needle palm	Yes	No	No	No
yucca	Yes	No	No	No

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

needle palm: yucca with long stiff leaves having filamentlike appendages
yucca: any of several evergreen plants of the genus Yucca having usually tall stout stems and a terminal cluster of white flowers; warmer regions of North America

needle palm (noun)	yucca (noun)
yucca with long stiff leaves having filamentlike appendages	any of several evergreen plants of the genus Yucca having usually tall stout stems and a terminal cluster of white flowers; warmer regions of North America