outline [outlines](line marking the boundary of an object figure) noun [UK: ˈaʊt.laɪn] [US: ˈaʊˌt.laɪn]I need to trace the outline. = Necesito trazar el contorno.
contornonoun {m}
contour [contours](outline, boundary or border) noun [UK: ˈkɒn.tʊə(r)] [US: ˈkɑːn.ˌtʊr]The lava flow has already reached the sea and is changing the contours of the coastline. = El caudal de lava ya ha llegado al mar y está cambiando el contorno de la costa.