Dashes: How to Use Them in Sentences | Grammarly
https://www.grammarly.com/blog/dashA dash is a little horizontal line that floats in the middle of a line of text (not at the bottom: that’s an underscore). It’s longer than a hyphen and is commonly used to indicate a range or a pause. Dashes are used to separate groups of words, not to separate parts of words like a hyphen does. (learn more about the difference between a dash and a hyphen here).
How to Use a Dash - ThoughtCo
https://www.thoughtco.com/what-is-a-dash-in-punctuation-169041630.05.2019 · There are actually two types of dashes, each with different uses: the em dash—also called the "long dash," according to Oxford Online Dictionaries—and the en dash, which doesn't have another name but falls between the hyphen and em dash in terms of length.The en dash is so named because it is approximately the equivalent width of the uppercase letter N and the em …