From reading it seems alot like anything else. There are many different levels of Acceptance and Support.
But you will never get support without acceptance obviously.
Just like anything else in our personal relationships things develop and mature, as a certain level of acceptance increases, eventually the support may come along.
Acceptance could be as simple as your SO giving you access to her panty drawer because she knows you are in there anyway, or she may let you go out without her.
Support is an entirely different level of Acceptance I think. Again this can have many different levels.
Possibly the best way to differentiate between the 2 would be Participation.
I think to consider there to be support, there would need to be some type of participation from your SO.
Just because she lets you in the panty drawer, doesnt mean that she is going to buy a couple of extra pair of the black ones because that is what you like.
OR
If she is OK with you going out, she may never want to be seen with you in public while dressed.
You have to take what you can get. It is all good.