Photograph
Part of speech: noun
Definition: A picture created by projecting an image onto a photosensitive surface such as a chemically treated plate or film, CCD receptor, etc.
Part of speech: verb
Definition: To take a photograph of. To take photographs. To appear in a photograph.
Example sentence: Character, like a photograph, develops in darkness.
Photo
Part of speech: verb
Definition: To take a photograph.
Part of speech: noun
Definition: photograph
Example sentence: Twitter is a place where you share your thoughts, yourself... you don't want a plain white backdrop for that. You want the entire page to say something about who you are. Designer or not, if the urge strikes you, go for it. Put up that watercolor you've never shown anyone. Take a photo of that hat you just knitted... whatever it is, share it.