Black flies are a type of fly that are typically found in the summertime. They are usually black in color and can be found near water sources, such as rivers, ponds, and lakes. The term 'black flies' can be broken down into three smaller words: gnattier (8 letters), gnats (5 letters), and GNAT (4 letters). Gnattier is the most specific term, referring to a particular species of black fly, while gnats and GNAT are more general terms that refer to any type of small fly.