The colon (:) and the semicolon differ greatly in use. The semicolon is a strong separator almost equal to a period, and is used only between equal parts. The colon is an introducer: calling attention to something that is to follow. It has the same meaning as follows: Use the colon after the salutation of a business letter. Dear Mr. Kayode:  Use the colon after a formal introductory statement to a direct attention to what is to follow:   The colon may direct attention to an appositive (or a series of appositives), to a formal list or explanation, or to a long quotation. All her thoughts were centred on one…