This is the 653rd most frequent Danish word.
kvinden
"The woman."
The word 'kvinden' is the definite form of 'kvinde', meaning 'the woman', referring to a specific woman who is engaging in the action of reading a book.
Kvinden læser en bog.
The woman is reading a book.
In this sentence, 'kvinden' emphasizes that the woman being seen was specifically known or identified in the context.
Jeg så kvinden på gaden.
I saw the woman on the street.
Here, 'kvinden' indicates that the subject overseen by the dog was a particular, definite woman known in the narrative of the sentence.