While trying to search for numerical analysis related questions, I discovered the existence of two tags numerical-methods and numerical-analysis. Although there were very few questions with the tag "numerical-analysis", the presence of the two seems redundant to me. Also, a "numerical-analysis" tag seems to be more appropriate. Should the tags be merged and "numerical-methods" be replaced by "numerical-analysis"?
You are correct that there is a redundancy; these two tags have already been merged as they are synonyms of each other. Clicking on the tag links in the OP will bring you to the same spot.
But it seems as though "numerical-methods" beat out "numerical-analysis" as the tag of choice.
Note that there is a list of all tag synonyms here.