The compound "won-loss" is a modern American English formation, primarily used in the context of sports statistics. It is a straightforward combination of the past participle "won," denoting a victory, and the noun "loss," denoting a defeat. The term reflects a quantitative, record-keeping perspective on competition, reducing complex outcomes to a binary tally. Its logic is purely additive, creating a single concept from two opposing results to summarize overall performance.

Structure: [Compound Word: won + loss] - won: Past participle of the verb 'win', from Old English winnan (to labor, toil, struggle, fight). In this compound, it functions as a noun representing the concept of a victory. - loss: A noun from Old English los (destruction, loss), from Proto-Germanic lusa-. It functions as a noun representing the concept of a defeat.