antidepressant vs medicament

antidepressant and medicament both are nouns.

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

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

antidepressant: any of a class of drugs used to treat depression; often have undesirable side effects
medicament: (medicine) something that treats or prevents or alleviates the symptoms of disease

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

antidepressant (noun)	medicament (noun)
any of a class of drugs used to treat depression; often have undesirable side effects	(medicine) something that treats or prevents or alleviates the symptoms of disease