Broadswords were used in medieval times, so they often appear in historical contexts or fantasy genres. In the medieval reenactment, the warriors clashed their broadswords.
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Visual Imagery
The word broadsword evokes images of epic battles and knights, useful for descriptive writing. The hero's broadsword gleamed ominously in the dimming light.
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Not Modern
Broadswords are not used in modern warfare, so they're not mentioned in current military contexts. Despite being outdated, his grandfather's broadsword was kept as a family heirloom.