Child Kid

What is the origin of the word child. When you start using the place of children kid?

I do not like being a child called children. When children instead of starting to use children? A child is a young goat for a child to call a young goat? What is the origin and history of the word child?

Child (n.) Extent sense of the word "child" as slang for 1599 prepared the first time in 1840 using informal. First Muchachito 1896. It applies to young and skilled thieves Pugilist at least since 1812. Kid Stuff "something something easy "is from 1923. However, they have not stopped using the word "child"!

Child Kid