The term 'sharp ringing sound' can be described by two words: 'PING' and 'twang'. 'PING' is a four-letter word that is used to describe a sharp, high-pitched sound, such as the sound of a bell or a metal object being struck. 'Twang' is a five-letter word that is used to describe a sharp, ringing sound, such as the sound of a guitar string being plucked. Both words are commonly used to describe a sharp ringing sound.