The colon ( : ) is a mark of punctuation used after a statement (such as an independent clause) or that introduces a quotation, an explanation, an example, or a series and a semicolon (;) is a punctuation mark that has two main functions: Semicolons separate items in a complex list.
1. 12 months in a year (January,February,March,April,May,June,July,August,September,October,November,December)2. 7 days i a week (Monday,Tuesday,Wednesday,Thursday,Friday)3. 1,2,3,4,5,6,7,8,9