nontricyclic vs antidepressant

nontricyclic and antidepressant both are nouns.

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

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

nontricyclic: a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO
antidepressant: any of a class of drugs used to treat depression; often have undesirable side effects

Other hypernyms of nontricyclic include antidepressant drug.

nontricyclic (noun)	antidepressant (noun)
a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO	any of a class of drugs used to treat depression; often have undesirable side effects