This is the 7619th most frequent Spanish word.
kirk
The word "kirk" is not Spanish; it is Scottish dialect for "church" in English.
Here, 'Kirk' is used as a proper noun referring to a specific character.
El capitán Kirk guía a su equipo en la nave.
Captain Kirk leads his team on the ship.
Here, 'kirk' is used as a noun referring to a church, based on Scottish English usage.
La iglesia en escocés puede llamarse 'kirk'.
The church in Scottish can be called 'kirk'.
Again, 'Kirk' is a proper noun referring to the fictional character.