helping vs medallion

helping and medallion both are nouns.

Word	Noun	Adjective	Verb	Adverb
helping	Yes	No	No	No
medallion	Yes	No	No	No

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

helping (noun)	medallion (noun)
an individual quantity of food or drink taken as part of a meal	an award for winning a championship or commemorating some other event
	an emblem indicating that a taxicab is registered
	a circular helping of food (especially a boneless cut of meat)
	a circular helping of food (especially a boneless cut of meat) "medallions of veal"
	any of various large ancient Greek coins