On the list of tag synonyms page, the terms "Master" and "Synonym" are used.
This is clear. The "Master" tag is the tag that actually is used on the site and the "Synonym" is the tag that gets changed.
But, on the creation page, the wording is less clear:
Here, we have "Source" and "Target". I'm sure that if someone explained which is which to me, I'd understand it but it isn't instantly clear and so I'm requesting that we use the same wording on this page as on the synonym page.
Even if it were clear, why are we using two different terms for each? This makes little sense.