This is the 419th most frequent Swedish word.
har
"Har" = "Have" (present tense)
In this sentence, 'har' is used as a verb to demonstrate possession, equivalent to 'have' in English.
Jag har en bok.
I have a book.
Here, 'har' is an auxiliary verb used in forming the present perfect tense, combining with 'gått' to indicate a completed action.
Hon har gått till affären.
She has gone to the store.
In this sentence, 'har' functions together with 'varit' to form the present perfect tense, describing a period of time extending to now.