sweet sand verbena vs Abronia fragrans

sweet sand verbena and Abronia fragrans both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet sand verbena	Yes	No	No	No
Abronia fragrans	Yes	No	No	No

As nouns, sweet sand verbena and Abronia fragrans are synonyms defined as:

sweet sand verbena and Abronia fragrans: taller than Abronia elliptica and having night-blooming flowers

sweet sand verbena (noun)	Abronia fragrans (noun)
plant having heads of fragrant white trumpet-shaped flowers; grows in sandy arid regions	taller than Abronia elliptica and having night-blooming flowers
taller than Abronia elliptica and having night-blooming flowers