Synonyms for Tract (same or very similar meaning)
WordNet sense 1 (an extended area of land):
parcel, parcel of land, piece of ground, piece of landWordNet sense 2 (a brief treatise on a subject of interest; published in the form of a booklet):
pamphletWordNet sense 3 (a bundle of myelinated nerve fibers following a path through the brain):
pathway, nerve pathway, nerve tractFrom the ODE community, based on WordNetadd/edit