I read a post in the Attaining Lucidity forum where someone recommended methods for astral projection to come out of his body and start an LD.

Sorry if it has been asked before, but it raises the question: What is the difference between an astral projection and a lucid dream?

I looked up methods for astral projections, and some seem just like LD methods. Relaxing, concentrating, then some sort of movement such as rolling to either "project" or start dreaming. Seems to me mystics or occultists discovered LDing and thought it was something spiritual.

You can make yourself see your own body and silver cords etc in an LD so I'm curious as to what the supposed difference is.