This is the 5322nd most frequent Swedish word.
elton
"Elton" is not a standard Swedish word; it is typically a name.
Here, 'Elton' is used as a proper noun, a name, and is in the possessive form by adding '-s' as in English.
Eltons bok ligger på bordet.
Elton's book is on the table.
In this sentence, 'Elton' is again a proper noun, used as a name to denote someone's identity.
Min kompis heter Elton.
My friend's name is Elton.
The context here uses 'Elton' as the name of a dog, showing that proper nouns, including names given to animals, function similarly in Swedish as they do in English.