In my opinion, a submissive submits to the will of the Dominant in a scene, within the pre-negotiated limits they agree upon.   She does not direct the scene in any way and it is his choice which of those negotiated items he will incorporate into any particular scene.   By contrast, a "bottom" often negotiates precisely what will happen in a particular scene, down to how many strokes with a particular toy.   She does not submit her will to that of the Dominant or Top, and there is no exchange of power...  simply a planned scene.   The verb form, to "bottom" can apply to either a bottom or a submissive, describing the activity of being the recipient of the Dominant's actions.   I won’t go into the differences between "submissive" and "slave" because they are not important for purposes of training.   A Dominant who tries to train a "bottom", however, will find it an impossible task in most cases.   There is nothing wrong with being a bottom rather than a submissive...  but it is important for the Dominant to understand the difference!

On Communication:

Learning honest communication is the most important part of any submissive’s training.   It is natural to hide certain things about ourselves and a good Dominant will inspire enough trust in his submissive to gain access to these "secret areas".   Part of the gift of submission is the opening of one’s soul to the Dominant...  giving the complete self to Him and trusting that He will care for it as his most treasured possession.