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atelectasis vs. pneumonia

[at-l-ek-tuh-sis] / ˌæt lˈɛk tə sɪs /

noun

Pathology.
  1. incomplete expansion of the lungs at birth, as from lack of breathing force.

  2. collapse of the lungs, as from bronchial obstruction.

[noo-mohn-yuh, -moh-nee-uh, nyoo-] / nʊˈmoʊn jə, -ˈmoʊ ni ə, njʊ- /

noun

Pathology.
pneumonia plural
  1. inflammation of the lungs with congestion.

  2. Also called lobar pneumonia.  an acute disease of the lungs, caused by the bacterium Streptococcus pneumoniae and characterized by fever, a cough with blood-tinged phlegm, and difficult breathing.