While looking through some of the tags pertaining to the MCU, I noticed there is a tag synonym for captain-america which points to captain-america-the-first-avenger, meaning the movie itself. I find this sort of problematic. The issue as I see it is, we have and are getting much more of an amalgamation of characters throughout the MCU which are crossing over into the other movies. This is especially true for avengers-infinity-wars. The problem lies in what if someone wants to ask a question specific to the Captain in Infinity Wars and yet differentiate it from The First Avenger? The tag synonym as it stands for captain-america will not allow you to do that.
My suggestion is, we somehow specify between the character and the movie they originate from when the two could be. For instance using captain-america-character, black-panther-character, iron-man-character, or thor-character (to name a few) which would fully differentiate the character from their respective movie.
I'm sure there are other examples of this type of thing where it would be good to differentiate the character from the movie itself. This is just an obvious cross pollination of characters within the MCU where we should be able to specify for this. I'm trying to lay down a general rule which would allow us a bit of consistency when dealing with the characters versus their respective introductory movie.