antifreeze vs glycol

antifreeze and glycol both are nouns.

Word	Noun	Adjective	Verb	Adverb
antifreeze	Yes	No	No	No
glycol	Yes	No	No	No

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

antifreeze: a liquid added to the water in a cooling system to lower its freezing point
glycol: a sweet but poisonous syrupy liquid used as an antifreeze and solvent

Other hyponyms of antifreeze include ethanediol, ethylene glycol, propanediol, propylene glycol.

antifreeze (noun)	glycol (noun)
a liquid added to the water in a cooling system to lower its freezing point	any of a class of alcohols having 2 hydroxyl groups in each molecule
	a sweet but poisonous syrupy liquid used as an antifreeze and solvent