imbiber vs toper

imbiber and toper both are nouns.

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

As nouns, imbiber and toper are synonyms defined as:

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

Other synonyms of imbiber include drinker, juicer.

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