antimony: a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite
metallic element: any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
goncalo alves: tall tropical American timber tree especially abundant in eastern Brazil; yields hard strong durable zebrawood with straight grain and dark strips on a pinkish to yellowish ground; widely used for veneer and furniture and heavy construction