Brownish-red and Chestnut

Brownish-red adjective - Of dark brownish to purplish red.

Chestnut and brownish-red are semantically related In some cases you can use "Chestnut" instead an adjective phrase "Brownish-red".

Chestnut adjective - (of hair or feathers) of a golden brown to reddish brown color.

Brownish-red and chestnut are semantically related in colour topic. You can use "Brownish-red" instead an adjective "Chestnut".