# What is the difference between the “chemistry” and “astrochemistry” tags?

Both the and tags have over a dozen questions.

However there are only four questions that have both tags, and three of those are mine, probably in anticipation that they might be merged in the future.

• Do we need both as tags?
• If so, what is the difference?
• If not, should they be merged?

Here are questions that are tagged , categorized by how well I estimate that would suffice and a separate tag would not be needed. I'm wondering if "chemistry" is even the proper tag or something like "geochemistry" or "planetary-chemistry" might be a better name for it.

tag will probably suffice:

Not sure, depends on what means:

probably not the proper tag:

• for my own reference (I can't keep them straight): What are tag synonyms and merged tags? How do they work? I'll check the existing chemistry questions for non-astrochemistry instances, msg here if I find any. – uhoh Apr 28 '19 at 16:02