Wikipedia:The curse of COMMONNAME

WP:COMMONNAME is the primary guideline for how to name articles. What it says is that, given a particular subject, the title at which that subject's article is located on Wikipedia should be the one by which it is most commonly referred to.

It is a common error to get this backwards, and to assume nominative determinism; that is, an article's title defines its subject.

Examples:


 * Bill Clinton is an article on a former President of the United States. That the article is entitled "Bill Clinton" does not imply that it is an article on anyone with that name.
 * Trench warfare is about the particular system of warfare that came about in the early 20th century when artillery and machine guns eliminated the use of horse cavalry on the battlefield. That the article is entitled "trench warfare" does not imply that it is about any form of warfare which involves trenches.

The most common remedy is to move content on other subjects out to a different title (if indeed they are notable in themselves) and add a hatnote pointing to them. Occasionally (as with trench warfare), the alternative subject doesn't really need an article to itself (it's a indiscriminate bunch of information) and can just be removed.