Here's a breakdown:
* Proper Nouns: These are names of specific individuals, places, organizations, and things. They are always capitalized.
* People: John, Mary, Dr. Smith
* Places: New York City, Mount Everest, the Pacific Ocean
* Organizations: United Nations, Google, the Red Cross
* Days of the Week: Monday, Tuesday, etc.
* Months: January, February, etc.
* Holidays: Christmas, Thanksgiving, etc.
* Specific Titles: President Biden, King Charles III
* Books, Movies, and Plays: "The Great Gatsby," "Avatar," "Hamlet"
* Common Nouns: These are general terms for people, places, and things. They are not capitalized unless they are part of a proper noun.
* people: doctors, students, neighbors
* places: city, mountain, ocean
* organizations: school, company, charity
* days of the week: a weekday, the weekend
* months: a month, the summer months
* holidays: a holiday, a celebration
Important Notes:
* The first word of a sentence is always capitalized.
* Capitalize the pronoun "I" and the interjection "O."
* Titles like "President" or "Senator" are capitalized when they are part of a person's full title but not when used generally. (e.g., "President Biden" but "the president of the United States")
Let me know if you'd like examples or have specific questions about any capitalization rules!