The [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'") tag is supposed to be for questions about the graphs of functions. But it is very commonly misapplied to questions that are about the graphs of graph theory. These questions are supposed to have the [graph-theory](https://math.stackexchange.com/questions/tagged/graph-theory "show questions tagged 'graph-theory'") tag instead. Many don't.

Many questions have both tags. There are between 50 and 100 questions tagged with both graph and graph-theory, and I would be surprised if both tags were appropriate for even one of these. 

The [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'") tag is usually wrong. I suggested in the "tagging" chat that we:

1. Eliminate [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'")
2. Replace it with something less ambiguous: perhaps [function-graph](https://math.stackexchange.com/questions/tagged/function-graph "show questions tagged 'function-graph'"), or perhaps just eliminate it
	* (My current favorite suggestion is that we replace it with [graphing](https://math.stackexchange.com/questions/tagged/graphing "show questions tagged 'graphing'").)
3. Blacklist it to prevent further confusion

I suggested this in the "tagging" chat.
Martin Sleziak, the person who seems to have given the most thought to tagging issues, replied:

> 
> It is good that you have mentioned this problem. I've retagged a few questions (but there is a lot of them remaining.) I've also added a comment template [here](http://meta.math.stackexchange.com/questions/4925/list-of-comment-templates/8587#8587).
>  If you think that the [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'") tag should be blacklisted, you should probably start a meta thread. Blacklisting a tag is a big decision, so the community should know about it and it would be good if some consensus could be achieved.
> 
> 
> 

I thought about it some more, and here we are. There are a few hundred questions tagged with [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'"), so it would not be an insurmountable task to eliminate them manually. Around one-sixth of these also have [graph-theory](https://math.stackexchange.com/questions/tagged/graph-theory "show questions tagged 'graph-theory'"), and we might decide, as a first step, to mechanically remove [graph](https://math.stackexchange.com/questions/tagged/graph "show questions tagged 'graph'") from each of those; this would be correct in the great majority of cases.

Thoughts?