Adam's needle vs yucca

Adam's needle and yucca both are nouns.

Word	Noun	Adjective	Verb	Adverb
Adam's needle	Yes	No	No	No
yucca	Yes	No	No	No

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

Adam's needle: 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

Adam's needle (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