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Cavity vs Blowhole - What's the difference?

cavity | blowhole |

As nouns the difference between cavity and blowhole

is that cavity is a hole or hollow depression while blowhole is the spiracle, on the top of the head, through which cetaceans breathe.

cavity

English

Noun

(cavities)
  • A hole or hollow depression.
  • A hollow area within the body (such as the sinuses).
  • (dentistry) A soft area in a decayed tooth.

    • Synonyms

    * See also * (dentistry)

    Derived terms

    * buccal cavity * cavity back * cavity batten * cavity coupling * cavity fill * cavity filter * cavity impedence * cavity magnetron * cavity oscillator * cavity radiator * cavity resonance * cavity tray * cavity tuning * cavity vent * cavity wall * oral cavity

    Related terms

    * cave * concave * excavate * excavation * excavator

    External links

    * * *

    blowhole

    English

    Noun

    (en noun)
  • The spiracle, on the top of the head, through which cetaceans breathe.
  • A vent for the escape of gas.
  • A top-facing opening to a cavity in the ground very near an ocean's shore, that leads to a marine cave from which wave water and/or bursts of air are expelled.
  • An unintended cavity filled with air in a casting product.
  • A vertical opening in the top of computer cases, that let hot air, primarily from the CPU heat sink, escape quickly.