antispasmodic vs medicament

antispasmodic and medicament both are nouns.

Word	Noun	Adjective	Verb	Adverb
antispasmodic	Yes	No	No	No
medicament	Yes	No	No	No

As nouns, medicament is a hypernym of antispasmodic; that is, medicament is a word with a broader meaning than antispasmodic:

antispasmodic: a drug used to relieve or prevent spasms (especially of the smooth muscles)
medicament: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of antispasmodic include medication, medicinal drug, medicine.

antispasmodic (noun)	medicament (noun)
a drug used to relieve or prevent spasms (especially of the smooth muscles)	(medicine) something that treats or prevents or alleviates the symptoms of disease