What is frication ?

Frication is a linguistic term that refers to the production of a sound by forcing air through a narrow channel in the vocal tract, causing friction or turbulence. This typically results in a hissing or buzzing sound. Fricatives are a type of consonant sound that is produced through frication. Examples of fricatives in English include the sounds /f/, /v/, /s/, /z/, /ʃ/, and /ʒ/.