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The term 'Downwind' refers to the direction that the wind is blowing towards. In contrast, 'Leeward' describes the side or area that is sheltered from the wind, making it synonymous with 'Downwind'. When a firefighter is positioned downwind of a fire, they are located on the side where the smoke and heat are being carried by the wind. Understanding this term is crucial for firefighters in planning their approach and ensuring safety, as positioning relative to the wind direction can significantly impact the effectiveness of fire suppression efforts and the health of personnel involved.

In this context, 'Windward' refers to the side from which the wind is coming, which is the opposite of downwind, while 'Flow direction' is a more general term referring to the path that materials or energy take, and 'Current' typically deals with fluid dynamics like rivers or ocean currents rather than wind. Thus, 'Leeward' accurately embodies the concept of being downwind in relation to wind behavior.