knä

In a sentence

• Hon satte sig på hans knä.

  She sat on his knee.

  Here, the word 'knä' is used to directly refer to the physical part of the body, the knee, which is being used as a seat in the context indicated.

• Jag gjorde illa mitt knä när jag föll.

  I hurt my knee when I fell.

  In this context, 'knä' refers to the anatomical part of the body that has been injured, the knee.

• Barnet sitter ofta i sin mammas knä när hon berättar historier.

  The child often sits on their mother's lap when she tells stories.

  In this sentence, 'knä' is used metaphorically or synecdochially to refer to the lap area that is formed when sitting.