Wikipedia:Articles for deletion/Duology (2nd nomination)
duology has an entry in the Oxford Dictionary of English with an etymology of "mid 19th century: from duo- ‘two’, on the pattern of trilogy." – Wikipedia is not a dictionary (#DICTIONARY), but this is an established term in the arts used for approximately 170 years
— User:Epinoia, 23:01, 10 February 2021 (UTC)
Stance: keep
Cited policy: WP:NOT (Wikipedia:What Wikipedia is not)