Jisho

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Noun, No-adjective
1. pollution; public nuisance; contaminationSee also 汚染 おせん
Wikipedia definition
2. PollutionPollution is the introduction of contaminants into a natural environment that causes instability, harm, or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution.
Read “Pollution” on English Wikipedia
Read “公害” on Japanese Wikipedia
Read “Pollution” on DBpedia

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