when do you use a colon for lists
Colon (punctuation) The colon ( : ) is a punctuation mark consisting of two equally sized dots centered on the same vertical line. A colon precedes an explanation or an enumeration, or list. A colon is also used with ratios, titles and subtitles of books, city and publisher in bibliographies, Biblical citations between chapter and verse, and—in American English—to separate hours and minutes, for business letter salutations and in formal letter writing.[1]
Dash The dash is a punctuation mark that is similar in appearance to a hyphen or minus sign, but differs from both of these symbols primarily in length and function. The most common versions of the dash are the en dash (–) and the longer em dash (—), whose names historically were loosely related with the length of a lower-case n and upper-case M, respectively, in commonly used typefaces.