There are a significant number of people who can switch between being dominant and being submissive depending on the partner. For example I always thought I was simply Dominant until a special Domme approached me and for a glorious interlude I became a surprised sub.

There are many Dom[me]s who are in subservient (okay, not exactly the same thing, but close) roles in their working lives, then come home and demonstrate their Dominant skills. Others who may be top bosses of their organisations can be found joyously licking someone's boots in the evening.

Some can do both roles at the same time: for example having a Master who they are happy to obey and simultaneously enjoying dominating another who is submissive to them.

But at each moment in time and between each pair/group the Dominant is the one giving the instructions/orders/guidance/etc. and the submissive the one following/obeying/listening.

Maybe if someone asks whether you are a dominate or a submissive the correct answer is "yes" after all either way that is true.

VV