mad-dog skullcap vs mad-dog weed

mad-dog skullcap and mad-dog weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
mad-dog skullcap	Yes	No	No	No
mad-dog weed	Yes	No	No	No

As nouns, mad-dog skullcap and mad-dog weed are synonyms defined as:

mad-dog skullcap and mad-dog weed: an American mint that yields a resinous exudate used especially formerly as an antispasmodic

Other synonyms of mad-dog skullcap include blue pimpernel, blue skullcap, Scutellaria lateriflora.

mad-dog skullcap (noun)	mad-dog weed (noun)
an American mint that yields a resinous exudate used especially formerly as an antispasmodic	an American mint that yields a resinous exudate used especially formerly as an antispasmodic