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baking sheet vs. cookie sheet

baking sheet
[bey-king sheet] / ˈbeɪ kɪŋ ˌʃit /

noun

baking sheets plural

  1. a flat, rectangular metal pan used for baking cookies, bread, and other food in an oven, typically having four slightly raised rims.

cookie sheet
[kook-ee sheet] / ˈkʊk i ˌʃit /

noun

cookie sheets plural

  1. a flat, rectangular pan used for baking cookies or biscuits, typically having one or two slightly raised rims.