A semicolon has two main jobs: joining two closely related independent clauses (complete sentences) without a conjunction, and separating items in a list where the items themselves contain commas. It's stronger than a comma but softer than a full stop — a way of saying "these two ideas are separate sentences, but closely connected."
Use a semicolon between two complete sentences that are closely related in meaning, instead of starting a new sentence or using "and":
The test: could each half stand alone as its own complete sentence? If yes, and they're closely related, a semicolon works. If either half is NOT a complete sentence, you need a comma or nothing at all instead.
When list items already contain commas, using more commas between them gets confusing — semicolons make the boundaries clear:
Without semicolons, it's unclear whether this is a list of three cities (each with its country) or six separate places.
Yes, when joining two complete, closely related sentences — "I finished the report; I sent it to the team" works instead of "I finished the report and sent it to the team."
No, not unless it's a proper noun. A semicolon joins two closely related sentences into one — it doesn't start a fresh sentence the way a full stop does.
