Here are some examples:
* Correct: The sun rises in the east.
* Correct: We drove north for several hours.
* Incorrect: We drove North for several hours.
However, these words are capitalized when used as part of a proper noun, such as a geographical region or a specific place:
* Correct: We went on a trip to the West Coast.
* Correct: The South is known for its warm climate.
* Correct: My grandparents live in the East.