This is the 8705th most frequent Swedish word.
brun
Brown.
Describes the color of the noun 'hunden' in a simple descriptive sentence.
Hunden är brun.
The dog is brown.
'Brunt' modifies 'hår' and agrees with the neuter gender of the noun (hår).
Hon har brunt hår.
She has brown hair.
The word 'brun' describes the color of 'fågel' (bird) as an attributive adjective.