countries — a state or nation: What European countries have you visited?
families — a basic social unit consisting of parents and their children, considered as a group, whether dwelling together or not: the traditional family. a social unit consisting of one or more adults together with the children they care for: a single-parent family.
lands — any part of the earth's surface not covered by a body of water; the part of the earth's surface occupied by continents and islands: Land was sighted from the crow's nest.
sites — the position or location of a town, building, etc., especially as to its environment: the site of our summer cabin.