Capitalization

Terminology refers to how words are defined for labels and titles.

Sentence case

Capitalize the first word of a phrase. The rest of the words will be lowercase, unless they are proper nouns or proper adjectives.

Title case

Capitalize every word except articles (a, an, the), coordinating conjunctions (and, or), and prepositions of four or fewer letters, except when part of a verb phrase, such as Starting Up the Computer. Always capitalize the first and last word, even if it is an article, a conjunction, or a preposition of four or fewer letters.