Phonophotography is a term used to describe the process of capturing sound waves through visual means. However, there are a few other synonymous terms for this concept. One such term is "sound photography", which refers to the capturing of sound waves as visual data. Another term for phonophotography is "sound recording", which refers to the process of capturing and storing sound waves for later use. A more technical term for phonophotography is "acoustic imaging", which is used in medical and industrial applications to visualize and analyze the properties of sound waves in different materials. Regardless of the term used, all these concepts revolve around the capturing of sound waves through visual means.