stolen / stollen are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
stolen: (verb) take without the owner's consent. (verb) move stealthily. (verb) steal a base.
stollen: NA
stolen: s·t·OW·l·ah·n
stollen: s·t·AA·l·ah·n
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)