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inhalation vs. exhalation

inhalation
[in-huh-lay-shuhn] / ˌɪn həˈleɪ ʃən /

noun

  1. an act or instance of inhaling.

  2. an inhalant.

exhalation
[eks-huh-lay-shuhn, ek-suh-] / ˌɛks həˈleɪ ʃən, ˌɛk sə- /

noun

  1. the act of exhaling.

  2. something that is exhaled; vapor; emanation.