The difference between a slave and a submissive

many people i know call themselves a slave, but they don't really know how to be a slave they don't know that they are just a submissives ,so i just gonna post the difference between slavery and submission.

A submissive is someone who negotiates; a slave does not.
A submissive has limits; a slave has given up all limits except those which his/her owner sets for them.
A submissive obeys and serves by choosing to do so each time and retains her will. A slave initially makes a choice to obey his/her master/mistress at all times and then submits to the will of his/her master at all times.
A submissive accepts submission, while a slave accepts obedience.
A submissive has retained some rights , whereas a slave has given up all rights and becomes, in effect, property.
A submissive is owned, but a slave is possessed.
A slave is not allowed to sit on furniture or wear clothes, and always kneels at his/her owner’s feet.
A submissive has a safe-word to end play, while a slave has consented to no-consent.
A slave must be a submissive, but a submissive is not necessarily a slave.
A slave is more submissive than a “mere” submissive. Submissives are just playing; slaves live the lifestyle.
A submissive has more self-respect than a slave.

At the end i have to say being a submissive is a step of being a slave but the slave can't be a submissive