"Start case" — capitalization of all words, regardless of the part of speech
Capitalization of all words, except for articles, prepositions, and conjunctions
Capitalization of all words, except for articles, prepositions, conjunctions, and forms of to be
Capitalization of all words, except for closed-class words
Capitalization of all nouns
Sentence case – Capitalization of only the first word, proper nouns .......