drunken reveler vs drunken reveller

drunken reveler and drunken reveller both are nouns.

Word	Noun	Adjective	Verb	Adverb
drunken reveler	Yes	No	No	No
drunken reveller	Yes	No	No	No

As nouns, drunken reveler and drunken reveller are synonyms defined as:

drunken reveler and drunken reveller: someone who engages in drinking bouts

Other synonyms of drunken reveler include bacchanal, bacchant.

drunken reveler (noun)	drunken reveller (noun)
someone who engages in drinking bouts	someone who engages in drinking bouts