Aliases
An alias is an alternate name for an entity. They typically contain common misspellings or variations of the name and are also used to improve search results.
Die Fledermaus: Akt II. Dialog „Haha, lieber Marquis“ … „Ah, da ist ja die schöne Unbekannte” (Frank, Adele, Orlofsky, Rosalinde, alle) has no aliases.