Second-class and Yellow-brown

Second-class adjective - Of little or less value or merit.

Yellow-brown and second-class are semantically related. In some cases you can use "Yellow-brown" instead an adjective phrase "Second-class".

Yellow-brown adjective - Of a medium to dark brownish yellow color.

Second-class and yellow-brown are semantically related. Sometimes you can use "Second-class" instead an adjective phrase "Yellow-brown".