In case-differentiated writing systems, capitalization (North American English) or capitalisation (British English) is the practice of writing a word with its initial letter as a capital letter (uppercase letter) and the subsequent letters in lower case. The rules have also evolved through time, with the goal of capitalizing fewer words. Today, many words that were not originally capitalized are so today, including titles, names of companies, institutions, and groups of people.
Capitalization is used to distinguish words that are similar in sound but different in spelling. For example, "affect" and "effect" both begin with "f," but one is a verb and the other a noun. Capitalizing the first word makes it clear that they are two distinct words.
Words that are commonly capitalized include titles, names, dates, facts, figures, questions, statements, and advertisements. Smaller labels and stickers may only provide space for a person's name or company name, in which case those words would be considered proper names and should always be capitalized.
Other common examples include: President Obama, International Space Station, Earth, France, London.
In general, if there is any doubt about whether or not a word should be capitalized, then don't. It's up to the writer to decide what degree of separation exists between two or more words and they can be capitalized or not depending on their preference.
The practice of writing a word with the initial letter in uppercase and the subsequent letters in lowercase is known as capitalization. Experienced authors use capital letters sparingly. Other than at the beginning of a sentence, an author usually uses capitals only when necessary for clarity or to indicate a title or heading.
Capital letters are used in several contexts within writing. They are often used to indicate a person's name or title, such as Mr. President or Mrs. Robinson. Letters after names can be capitalized or not depending on preference; many writers choose not to capitalize them. Words that describe physical qualities or characteristics of people usually begin with a capital letter, such as Black, White, Red, Brown. Other common words that start with a capital letter include Name, Book, Film, Play, Game, Pie, and President.
To create a sense of drama or urgency, writers may want to use all caps. This method of writing is commonly seen in headlines and teasers. Writers should be careful not to overuse this technique, though; it can look tacky if used excessively.
There are also times where lowercase letters are appropriate. These include words that are proper nouns (names of places or people), acronyms, and trademarks. Proper nouns are words that refer to specific people or things.
The practice of capitalizing words—making their first letter a capital letter—is known as capitalization (an uppercase letter). It can also be used to describe the condition of being capitalized. To capitalize the word polish (which is spelt with a lowercase p here), type it as Polish. Capitalization makes objects, people, and ideas stand out in a sentence. Without capitalization, polish would look like any other word and would not call attention to itself.
Capitalization is used extensively in writing and speaking for emphasis and clarity. Some common examples are: to distinguish items in a list (i.e., place capital letters after each item); to indicate the beginning of a quotation (usually the speaker's name is capitalized); and to indicate the start of an article (i.e., the title case spelling of the word).
Words that require capitalization are called "capital letters." The English language does not have a strict rule regarding capitalization, but many writers and editors follow a general practice of capitalizing nouns, pronouns, and adjectives. This is especially true when referring to people, places, or things that may not be familiar or important to the reader. For example, a writer might use capitals to make sure that her audience notices the name Jack Benny.
Some words, such as names and terms of art, are always capitalized.