Amplitude modulation Vs.Angle Modulation

Please send me the advantages and disadvantages of angle modulation over amplitude modulation.
thanx

I am used to the term phase modulation if that is what you are talking about. If you google amplitude modulation and phase modulation you will see the differences.

in google everywhr it's mentioned about amplitude Vs. Frequency. But what i want is Amplitude Vs. Angle/Phase.

you need to be a better googler ;)