is a specific kind of: chromatic color, chromatic colour, spectral color, spectral colour.

is a broader term that covers: Vandyke brown | chestnut | burnt umber, chocolate, coffee, deep brown, umber | hazel | light brown | mocha | burnt sienna, mahogany, reddish brown, sepia, Venetian red | buff, caramel, caramel brown, raw sienna, yellowish brown | puce | olive brown | taupe ... show more.

derivation: brown | brown, brownish, chocolate-brown, dark-brown.