Dashes, hypen and minus
- - hyphen-minus - used for compound terms and math as minus. What you get when hitting keyboard key.
- - hyphen - same as hypen-minus
− - real math minus (note that in programming it would often throw error if used)
– - en dash - used for span or range of numbers or scores
— - em dash - used as "soft comma" or instead of parens or for censoring words