What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Frequency modulation (FM) is the process of embedding information into a radio frequency wave by varying its instantaneous frequency. As the audio or data signal changes in amplitude, the frequency of the carrier wave shifts up and down proportionally. Other terms like "frequency conversion" refer to mixing signals to change a carrier from one frequency band to another, not to add information. "Convolution" and "transformation" are mathematical or digital signal processing terms, not standard analog modulation types.