Deletion of Duology (2nd nomination)

Comment: per  and , no sources are cited in the article
Stance: delete
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:NOTDICT||WP:GNG)

Comment: 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
Stance: keep
Cited policy: Wikipedia:What Wikipedia is not (WP:NOT)