There are two tags that seem to be split with the same meaning,
Perhaps the top could become a tag-synonym of the bottom?
I’ve created the relevant synonym, all it needs now is votes. Any user with an answer score of 5 or more on system-calls can vote! I had misread the requirements previously, it turns out there are quite a few users meeting the requirements. (The answer score is the number of upvotes on answers in the tag, minus the number of downvotes on answers in the tag.)