drinking vs guzzling

drinking and guzzling both are nouns.

Word	Noun	Adjective	Verb	Adverb
drinking	Yes	No	No	No
guzzling	Yes	No	No	No

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

Other hyponyms of drinking include gulping, swilling, potation.

drinking (noun)	guzzling (noun)
the act of consuming liquids	the drinking of large mouthfuls rapidly
the act of drinking alcoholic beverages to excess