


Use "lay" when the action is being performed on something else, and use "lie" when the subject is the one performing the action.
The past tense of "lay" is "laid," while the past tense of "lie" is "lay."
Context matters in English because the meaning of words can vary based on the surrounding words, phrases, or situation. Words often have multiple meanings, and the intended sense becomes clear through the context in which they are used.

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