Peak
Definition 1 of 4
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Figurative Usage
Peak may imply a climax or highest achievement in non-physical contexts. His career hit its peak after that groundbreaking invention.
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Temporary State
Peak often suggests a temporary high point that declines afterwards. Product sales reached their peak around the holidays.
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Context Specific
Peak can refer to maximum levels in different contexts, like business or traffic. We're anticipating peak traffic during the festival.