Not many casual biologists (and certainly very few non-biologists) know what the field of limnology refers to. As such, I would think that a number of questions that would appropriately receive the limnology tag have not (and do not) receive the tag. (e.g., a search for "lake" brings up 82 results that otherwise have no limnological tag associated with them).
So I proposed two tag synonyms for limnology
My reasoning was to allow someone searching for tags referencing two well known terms ("freshwater" and/or "aquatic") to get to the appropriate limnology tag.
I was assuming that suggesting these tag synonyms was the appropriate way to do this. However, I had to create these two new tags in order to actually suggest them as synonyms. Is there a different way to propose "synonyms" for improving the ability to search for appropriate tags without having to create new tags? In other words, can a non-existent tag synonym just be added directly to an existing tag?