Corpuscular theory of light States that:
Light is made up of small discrete particles called "corpuscles" (little particles) which travel in a straight line with a finite velocity.
According to Einstein,
Light is composed of small particle are known as photons. And energy of a photon is given by $E=h\nu$.
Corpuscular theory suggests particle nature of light. And existence of photons also suggests the particle nature of light. I see no difference between them. But why existence of photon is accepted but not corpuscles?