Question: New year, new tag management thread.

Rules of the game are basically [the same](https://math.meta.stackexchange.com/q/27653/43351):

* Post your suggestion as an answer here if you see
	+ A particularly bad tag (a rule of thumb: «if I can't imagine a person classifying a tag as either interesting or ignored, I'm getting rid of it»),
	+ A tag that should be a synonym of an existing one,
	+ A tag that used for two or more completely unrelated things,
	+ A need to create a new tag;
* Upvote/downvote/comment as your agree/disagree with suggestions, so please post different suggestions in separate answers;
* Wait a couple of days before implementing a suggestion.
* After the problem described in an answer is resolved, please edit it to say so.
* If your tag suggestion exists in a separate question, please provide a link to the question in your suggestion.

See also:

* The [list with pending and approved synonyms](https://math.stackexchange.com/tags/synonyms).
* The [tagging chatroom](http://chat.stackexchange.com/rooms/3740/tagging) for extended discussion on tagging.
* [Last year's thread](https://math.meta.stackexchange.com/q/27653/43351) to look for suggestions that need to be implemented.

Also, note that one may use `[tag:calculus]` for [calculus](https://math.stackexchange.com/questions/tagged/calculus "show questions tagged 'calculus'"), i.e. tags on the main site, and `[meta-tag:discussion]` for [discussion](/questions/tagged/discussion "show questions tagged 'discussion'"), i.e. for tags on the meta site.

Answer: 
> 
> **Resolved:** [euler-method](https://math.stackexchange.com/questions/tagged/euler-method "show questions tagged 'euler-method'") has been merged into [eulers-method](https://math.stackexchange.com/questions/tagged/eulers-method "show questions tagged 'eulers-method'"), a synonym created, and tag wiki updated.
> 
> 
> 

**Proposal: synonymize [euler-method](https://math.stackexchange.com/questions/tagged/euler-method "show questions tagged 'euler-method'") with [eulers-method](https://math.stackexchange.com/questions/tagged/eulers-method "show questions tagged 'eulers-method'")**

Notice that they are indeed different tags, as the former has user guidance, the latter doesn't. But they are essentially the same thing, i.e. a numerical method to solve first-order first-degree differential equations with a given initial value.
> 
> **Proposal: rename the synonym "[`laplaces-equation`](https://math.stackexchange.com/questions/tagged/harmonic-functions?tab=Newest)" to "`laplace-equation`" or to ''`laplace's-equation`''.**
> 
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> 

`laplaces-equation`is a synonym of [`harmonic-functions`](https://math.stackexchange.com/questions/tagged/harmonic-functions?tab=Newest). 

I think we should have remove the `s` from `laplaces-equation` or give an **Apostrophe** before `s` (i.e., `'s`) . 

There is nothing called `laplaces-equation` rather we can called it `laplace's-equation` or simply "`laplace-equation`".

**Want suitable opinion about my proposal.**