drinker vs toper

drinker and toper both are nouns.

Word	Noun	Adjective	Verb	Adverb
drinker	Yes	No	No	No
toper	Yes	No	No	No

As nouns, drinker and toper are synonyms defined as:

drinker and toper: a person who drinks alcoholic beverages (especially to excess)

Other synonyms of drinker include imbiber, juicer.

drinker (noun)	toper (noun)
a person who drinks alcoholic beverages (especially to excess)	a person who drinks alcoholic beverages (especially to excess)
a person who drinks liquids