Spanish moss vs genus Tillandsia

Spanish moss and genus Tillandsia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish moss	Yes	No	No	No
genus Tillandsia	Yes	No	No	No

Spanish moss (noun)	genus Tillandsia (noun)
dense festoons of greenish-grey hairlike flexuous strands anchored to tree trunks and branches by sparse wiry roots; southeastern United States and West Indies to South America	large genus of epiphytic or terrestrial sparse-rooting tropical plants usually forming dense clumps or pendant masses