Kewpie is a smoother, creamer mayonnaise, and it's made with rice vinegar rather than distilled vinegar.
Lexicographer: Rebecca Villalpando, Tulane University
Works Cited:
http://www.thekitchn.com/what-is-kewpie-mayonnaise-44639
http://www.kewpie.co.jp/english/mayonnaise.html