So I was browsing through the tags and tried myself on the first tag edit :) (which failed miserably because links shouldn't be in there)
Same goes for tags and tagging and probably a few more. One of those has been handled in a separate question 'Do we have to make more [cuts] or just keep [cutting]'
My first thought was to merge tags, but I haven't found the option anywhere. Then i discovered the tag synonyms page which @rob and @bowlturner already used. IMO the glue/gluing thing is not exactly a candidate for a synonym, but as gluing isn't really used except in one question, one could argue that the majority here uses glue anyway and we should drop gluing to keep the tags clear and easier to use.
Some of this my have already been answered in Tag Guidelines Meta question. Given the rising number of tags i think this topic merits its own discussion though.
This might expand the context of one meta discussion a bit too far and based on the feedback i will create new questions based upon it.
Can/Should the tag creation process become more restricted so not every newbie (like myself) can add tags that are maybe out of scope/topic. I'm thinking in the terms of tag-review where a moderator can approve/deny the creation of a new tag. But after some investigating i found out that that's technically not possible.