Exhaust
Part of speech: verb
Definition: To draw or let out wholly; to drain off completely; as, to exhaust the water of a well; the moisture of the earth is exhausted by evaporation. To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury. To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources. To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject. To subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether.
Part of speech: noun
Definition: System consisting of the parts of an engine through which burned gases or steam are discharged The steam let out of a cylinder after it has done its work there. The foul air let out of a room through a register or pipe provided for the purpose. An exhaust pipe, especially on a motor vehicle.
Example sentence: It's not like you have two sets of vocal cords. You only have one, and if you exhaust it from talking, then you're also affecting your singing.
Fumes
Part of speech: noun
Definition: A gas or vapour/vapor that is strong-smelling or dangerous to inhale.
Part of speech: verb
Definition: To expose (something) to fumes; specifically, to expose wood, etc., to ammonia in order to produce dark tints.