En dash

En dashes are used to connect continuing, or inclusive numbers–dates, time or reference numbers.

For example: The contractor said he would have a quote ready for them in 2–3 weeks. The journal released their May–September issue.

En dashes stand in for versus.

For example: The Ridgebacks–Mustang game.

En dashes signal pairing where both parts are equal.

For example: The Canadian–American border is well patrolled.

Note: Using en dash, rather than hyphen, can alter meaning drastically.

For example: Spanish-American war (meaning a war in parts of the Americas colonized by the Spanish). Spanish–American (meaning the 1898 war between Spain and the U.S.).