Answer :

A dash is mainly used for separating parts of sentences; it is alike a comma and parenthesis. A dash shows an interruption in the sentence. A hyphen is used to join words, divide words at the end of a sentence, and for words that are to be continued (suffixes, prefixes, etc).
A dash is mainly used for separating parts of sentences; it is alike a comma and parenthesis. A dash shows an interruption in the sentence. A hyphen is used to join words, divide words at the end of a sentence, and for words that are to be continued (suffixes, prefixes, etc).

Hopes this helps.