camel case camelCase
snake case snaka_case
Camel case always starts out lowercase with each word delimited by a capital letter (like personOne, textUtil, thingsToDo)
Pascal case is similar to camel case, but the first letter is always capitalized (like PersonOne, TextUtil, ThingsToDo)
Snake case means that we delimit words with an underscore (like person_one, text_util, things_to_do)