Yucca elata vs soapweed

Yucca elata and soapweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yucca elata	Yes	No	No	No
soapweed	Yes	No	No	No

As nouns, Yucca elata and soapweed are synonyms defined as:

Yucca elata and soapweed: tall arborescent yucca of southwestern United States

Other synonyms of Yucca elata include soap-weed, soap tree.

Yucca elata (noun)	soapweed (noun)
tall arborescent yucca of southwestern United States	tall arborescent yucca of southwestern United States