renewable is the opposite of nonrenewable
non_renewable_resource is tangible_thing. solar_power is clean_renewable_energy_source. bio_energy is renewable_energy. vacationer is nonworker. real_estate is non_renewable_resource. helium is non_renewable_resource. fossil_fuels is non_renewable_energy_sources. coal is non_renewable_resource. natural_gas is renewable_resource. renewable_energy is energy.