Lots of people aren’t sure how to use a semicolon.
The semicolon might be the most misunderstood punctuation mark in the English language. This dot-comma combination is often used where a period, colon, or even a plain old comma belongs.
Underused and often abused, the semicolon is useful in a number of writing situations. Although proper semicolon use requires a little finesse, this particular punctuation mark is surprisingly easy to understand.