Here's a breakdown:
When to capitalize:
* Proper nouns: "North America," "North Pole," "North Carolina" (states and regions).
* Formal titles: "The North Star"
* Specific locations: "The North Sea"
When not to capitalize:
* General directions: "We drove north."
* As an adjective: "The north wind is blowing."
* When not part of a proper noun: "They live in the northern part of the city."
Example:
"We drove north to visit the North Carolina coast, where the North Atlantic Ocean meets the North Shore."
In this example, "north" is not capitalized because it's a general direction. The other words are capitalized because they are part of proper nouns (specific locations).