WordNet sense 1 (reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture):

hazelwood, red gum, satin walnut

WordNet sense 2 (aromatic exudate from the sweet gum tree):

liquidambar

WordNet sense 3 (a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap):

bilsted, American sweet gum, Liquidambar styraciflua, sweet gum tree