this primary group. Their sense is determined by their being mutually exclusive, while their non-linguistic references depend chiefly on the listing and on the interpretation of their contexts. The next, lower layers are those of secondary and tertiary terms. These are more restricted in scope than the primary ones and are often—and quite transparently—derivatives of the former (שָחֹר→שְחַרְחֹר*, אָדֹם→אֲדַמְדַּם). The internal territory of each colour sector—the combination of hue, brightness, and