flash is used for two unrelated meanings: Adobe Flash and flash memory. How should they be disambiguated?
I think the best course of action in this situation will be to have two separate tags.
flash-memory for questions related to well... flash memory. I see you have already tagged one of your questions with it.
adobe-flash should be the tag used for Adobe Flash.
It appears that with the exception of one (https://security.stackexchange.com/questions/35990/can-you-tell-the-date-files-where-deleted-from-a-flash-drive) particular question, all the questions tagged with flash is referring to Adobe Flash.