Basically lucid dreaming your aware that your dreaming…..and astral projection it’s amazing because your out of body, at first you may think your dreaming the first time or two, you just do things like walk or float around, or you may astral travel as your spirit will take excursions on it’s own. I have met spirits before out of body, and some were the same spirits that came to visit while being in my body and even awake. I had one fight out of body with that dam demon that has came to harass me and my son, that was the way I got rid of him finally when I astral projected and went after him, and did have help from my spirit guide at the same time, never will I forget that one, and he never did come back after that. The awareness is just amazing.
OK, I guess it depends upon whether you want answers that are crap, or reality.
I don’t deal in crap, so here’s the other alternative. Astral projection is a fiction, there is no evidence for its existence, any where, any time, by anyone. By contrast, lucid dreaming is a well-recognised phenomenon, in which one is conscious that one is dreaming. With practice, it is possible to control the contents of the dream, to some extent.
Hope this helps.
Imagine the Astral realm as the ocean. Dream is the sandy beach and lucid dreaming is like walking barefoot in the tide.
Lucid dreaming, for most, is the most practical doorway into the astral world and second to that is the best way to become aware of how much control you can have of the circumstances of your life and how you can pursue the depth of the “rabbit hole” on purpose and with better information retention.