woolly mullein vs common mullein

woolly mullein and common mullein both are nouns.

Word	Noun	Adjective	Verb	Adverb
woolly mullein	Yes	No	No	No
common mullein	Yes	No	No	No

As nouns, woolly mullein and common mullein are synonyms defined as:

woolly mullein and common mullein: tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches

Other synonyms of woolly mullein include Aaron's rod, flannel mullein, great mullein, torch, Verbascum thapsus.

woolly mullein (noun)	common mullein (noun)
tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches	tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches