Biology (Noun) A science that deals with things that are alive, such as plants and animals; the study of life. Biology is the study of life and plants breathe through there leaves.
Photography (Noun) The art process, or job of taking pictures with a camera; named after the original process that used light to expose an image on special paper. There are a lot of photography people now.
Philadelphia (Noun) A US city founded by William Penn, a Quaker who believed in peace. My brother went to Philadelphia on his DC trip and got a Rocky magnet.