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spaulder vs. pauldron

[spawl-der] / ˈspɔl dər /

noun

Armor.
  1. a pauldron, especially one for protecting only a shoulder.

[pawl-druhn] / ˈpɔl drən /

noun

Armor.
  1. a piece of plate armor for the shoulder and the uppermost part of the arm, often overlapping the adjacent parts of the chest and back.