perspective [perspectives](technique of representing three-dimensional objects on a two-dimensional surface) noun [UK: pə.ˈspek.tɪv] [US: pər.ˈspek.tɪv]
projection [projections](cartography: system of representing surface of the earth on a flat surface) noun [UK: prə.ˈdʒek.ʃn̩] [US: prə.ˈdʒek.ʃn̩]