agony vs agonist

agony and agonist both are nouns.

Word	Noun	Adjective	Verb	Adverb
agony	Yes	No	No	No
agonist	Yes	No	No	No

agony (noun)	agonist (noun)
intense feelings of suffering; acute mental or physical pain	(biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
a state of acute pain	a muscle that contracts while another relaxes
	someone involved in a contest or battle (as in an agon)
	the principal character in a work of fiction