stands for

amplitude modulation

frequency modulation

origin

developed in the mid-1870s

developed in the 1930s

frequency range

from 535 to 1705 kHz
up to 1200 bits per second

from 88 to 108 MHz
between 1200 to 2400 bits per second

bandwidth

consume 30KHz of bandwidth for each signal

consume 80 kHz of bandwidth for each signal

noise

susceptible to noise because noise affects amplitude, which is where information is stored in an AM signal

less susceptible to noise because the information in FM signal is transmitted through varying the frequency and not the amplitude

power consumption

consumes less power

consumes more power

wavelength

work in the range of kHz
longer wavelengths than FM

work in the range of MHz
shorter wavelengths than AM

circuit complexity

simple circuitry

complicated circuitry for transmission and reception of the signal