Kisimul Castle (Scottish Gaelic: "Caisteal Chiosmuil" ) and also known as Kiessimul Castle, is a small medieval castle located on a small island off Castlebay, Barra, in the Outer Hebrides, Scotland. It gets its name from the Gaelic "cìosamul" meaning "castle island".
Caisteal Chiosmuil means castle island.
cìosamul is the word that means castle island not Caisteal Chiosmuil. I think it is similar enough that it confused the AI.