Speed is a measure of how quickly something moves. The term 'speeds (along)' can refer to the rate at which an object moves, or the rate at which a task is completed. In this crossword, the solutions 'ZOOMS' (5 letters), 'RACES' (5 letters), and 'ZIPS' (4 letters) all refer to different types of speed. 'ZOOMS' implies a very fast speed, while 'RACES' implies a competitive speed, and 'ZIPS' implies a quick speed. All three terms can be used to describe the rate at which something moves or is completed.