* At the beginning of a sentence: The first word of a sentence always starts with a capital letter.
* Proper Nouns: These are names of specific people, places, or things. Examples include:
* People: John, Mary, Queen Elizabeth
* Places: London, Mount Everest, the Amazon River
* Things: iPhone, Toyota, The Mona Lisa
* Organizations: United Nations, Google, The Red Cross
* Days of the week: Monday, Tuesday, Wednesday
* Months of the year: January, February, March
* Holidays: Christmas, Thanksgiving, Ramadan
* Titles: The first letter of every major word in titles (books, articles, movies, etc.) is capitalized. For example, "The Lord of the Rings," "War and Peace," "The Avengers."
The term for a noun written in a big letter is simply capitalized.