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The word biceps can refer to one muscle or several. Learn how numbers and verbs make the meaning clear, even when the spelling stays the same.

Quintessence first named the supposed fifth element beyond earth, water, air, and fire, then came to mean the purest example.

“Man bites dog” describes a surprising event that stands out because it breaks expectations. Here is where the phrase comes from.

An aptronym is a name that appears to fit its owner’s work, ability, or character. Learn how the term works through familiar examples.