Answer:
Semicolon (;) : A semicolon is most commonly used to link (in a single sentence) two independent clauses that are closely related in thought.
Ex. We visited Thailand, Vietnam, and Singapore in the spring Germany; France, and Italy in the summer.
Ex. We had too many fumbles; we lost the game.
Colon (:) : You can use a colon to connect two sentences when the second sentence summarizes, sharpens, or explains the first.
Ex. He was going to buy three things: chairs, tables, and utensils.