methacholine vs medicament

methacholine and medicament both are nouns.

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

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

methacholine: parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity
medicament: (medicine) something that treats or prevents or alleviates the symptoms of disease

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

methacholine (noun)	medicament (noun)
parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity	(medicine) something that treats or prevents or alleviates the symptoms of disease