Of One Kid Quotes

I can't get it why did I name my book series, I'm talking about "The Life Of One kid". I'm talking about the last word "Kid"?? Aren't your curious I'm with British Accent and putting "Kid" the American word for child the last? I'm also curious I still don't know, I really don't know why. Child sounds like a baby maybe that's all, kid sounds like a child in aobut 7-8 years old!