Brownish-black is a descriptive term used to refer to a color that is a blend of brown and black. However, there are several other words that can be used to express this shade. For instance, the word 'sable' is often used in fashion to describe a rich, deep black-brown hue, while 'charcoal' is synonymous with a dark grayish-brown that often resembles black. Other synonyms that can be used to describe this shade include 'ebony', 'sepia', 'mahogany', 'smoky brown', 'chocolate brown' and 'coffee brown'. Each of these terms can be used to describe a different variation of brownish-black.