Music
Part of speech: noun
Definition: A sound, or the study of such sounds, organized in time. Any pleasing or interesting sounds A guide to playing or singing a particular tune; sheet music.
Example sentence: Music is God's gift to man, the only art of Heaven given to earth, the only art of earth we take to Heaven.
Song
Part of speech: noun
Definition: A musical piece with lyrics (or "words to sing"); prose that one can sing.A musical sound by a bird.A musical sound by insect, whale or some other animal which sounds melodious to humans.Something that cost only a little.