Piezoelectric is a term used to describe the property of certain materials that generate an electrical charge when subjected to mechanical stress. There are several synonyms for the word "piezoelectric", including "pressure-electric", "polarization-electric", and "stress-electric". Other terms that may be used to describe similar materials and phenomena include "pyroelectric" (materials that generate an electrical charge when subjected to temperature changes), "ferroelectric" (materials that exhibit spontaneous electric polarization), and "piezoresistive" (materials that change their electrical resistance in response to mechanical stress). These terms are commonly used in fields such as materials science, engineering, and electronics, where understanding the properties of materials is essential for developing new technologies and products.