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paresis vs. paralysis

[puh-ree-sis, par-uh-sis] / pəˈri sɪs, ˈpær ə sɪs /

noun

Pathology.
  1. partial motor paralysis.

  2. a late manifestation of syphilis, characterized by progressive dementia and paralysis.

[puh-ral-uh-sis] / pəˈræl ə sɪs /

noun

plural

paralyses
  1. Pathology.

    1. a loss or impairment of voluntary movement in a body part, caused by injury or disease of the nerves, brain, or spinal cord.

    2. a disease characterized by this, especially palsy.

  2. a state of helpless stoppage, inactivity, or inability to act.

    The strike caused a paralysis of all shipping.