unwind / unwind matter is a renewable / inexhaustible warmth
non_renewable_resource is tangible_thing. unzip is unfasten. renewable_resource is tangible_thing. unwinding_dna_molecule is uncoiling. stack_unwinding is unwinding. wood is valuable_renewable_resource. wood is renewable_resource. unloading_watercraft is unloading. untie is unfasten. unloading_watercraft is translocating.