One Thousand and One Nights vs Arabian Nights

One Thousand and One Nights and Arabian Nights both are nouns.

Word	Noun	Adjective	Verb	Adverb
One Thousand and One Nights	Yes	No	No	No
Arabian Nights	Yes	No	No	No

As nouns, One Thousand and One Nights and Arabian Nights are synonyms defined as:

One Thousand and One Nights and Arabian Nights: a collection of folktales in Arabic dating from the 10th century

Other synonyms of One Thousand and One Nights include Arabian Nights' Entertainment, Thousand and One Nights.

One Thousand and One Nights (noun)	Arabian Nights (noun)
a collection of folktales in Arabic dating from the 10th century	a collection of folktales in Arabic dating from the 10th century