We are 0,02% different from humans. Even so, we are "humans who cast aside human form"; in other words, each Angel’s form is a tangible manifestation of its self-image. That is, Adam’s children can simply be whatever they imagine themselves to be. This is our and only individuality, for everything else, we are nothing but a whole.

Along side with that, what differs us from the Lilim is that you are able to form a civilization and develop. We aren't.