Difference between Blowhole and Vent

Blowhole

Part of speech: noun

Definition: The spiracle, on the top of the head, through which cetaceans breath. A vent for the escape of gas. A cavity in the ground that leads to a marine cave and out of which waves splash.

Vent

Part of speech: verb

Definition: To allow gases to escape.To allow to escape through a vent.To express.

Part of speech: noun

Definition: An opening through which gases, especially air, can pass.The opening of a volcano from which lava flows.A verbalized frustration.The excretory opening of lower orders of vertebrates.A slit in the seam of a garment.Ventriloquism.

Example sentence: I want things to be better all the time. And I tend to get angry about that. Books are an opportunity to vent.