mullein vs flannel leaf

mullein and flannel leaf both are nouns.

Word	Noun	Adjective	Verb	Adverb
mullein	Yes	No	No	No
flannel leaf	Yes	No	No	No

As nouns, mullein and flannel leaf are synonyms defined as:

mullein and flannel leaf: any of various plants of the genus Verbascum having large usually woolly leaves and terminal spikes of yellow or white or purplish flowers

Other synonyms of mullein include velvet plant.

mullein (noun)	flannel leaf (noun)
any of various plants of the genus Verbascum having large usually woolly leaves and terminal spikes of yellow or white or purplish flowers	any of various plants of the genus Verbascum having large usually woolly leaves and terminal spikes of yellow or white or purplish flowers