What is the difference between vampires and vampire bats?

My opinion,

I think the difference between a succubus vampire and a real vampire is that a vampire just wants to eat you and drink your blood. A succubus it like practically has sex with u or lures you into wanting her badly then right in the middle she kills u and drinks ur blood.

Your typical vampire has a re-animated dead body that it has to maintain by drinking blood. Not only does the vampire gain nutrition by drinking blood but also it steals life-force at the same time.

A succubus (the female variety of an incubus) does not have a physical body but is a creature of pure spirit. It only steals life-force as it has no need of any physical nutrients. She comes upon her male victim while he is sleeping and induces in him an erotic dream. It is via this dream that she is able to steal life-force.