MAOI vs tranylcypromine

MAOI and tranylcypromine both are nouns.

Word	Noun	Adjective	Verb	Adverb
MAOI	Yes	No	No	No
tranylcypromine	Yes	No	No	No

As nouns, tranylcypromine is a hyponym of MAOI; that is, tranylcypromine is a word with a more specific, narrower meaning than MAOI:

MAOI: any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulate
tranylcypromine: an antidepressant drug that is a monoamine oxidase inhibitor; administered as a sulfate

Other hyponyms of MAOI include iproclozide, isocarboxazid, Marplan, Nardil, phenelzine.

MAOI (noun)	tranylcypromine (noun)
any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulate	an antidepressant drug that is a monoamine oxidase inhibitor; administered as a sulfate