Components
汚染 is an exact match with one form of the following word:
汚染
BOOST
Reading : おせん   
pollution; contamination  (see also: 公害:こうがい)
My mastery:
My current mastery of 汚染:
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My flashcards:
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Usefulness and usage:
Kanshudo usefulness level: 2 (among the 1,500 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 147,950 which gives a rank of 1,307
汚染 is the most useful form. 1 additional form is shown below.
This word is a member of our collection of the 10,000 most useful words in Japanese:
• This form is used about 90% of the time
• Google Japan frequency rank: 21,000 (about 30,000,000 results)
• This form appears in Wikipedia's list of JLPT N3 vocabulary (see JLPT collections)
• iknow! Core 6000 rank: 3427 (see iKnow! collections)
• Wikipedia most common 20000 words rank: 5740
• This form appears in the 1998 'Ichimango goi bunruishuu' frequent word list by Senmon Kyouiku
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 3 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
• This form is used as an example of an official Joyo kanji reading
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Example sentences:
かんきょう
環境
おせん
汚染
いじょう
異常
きしょう
気象
じょうきょう
状況
こしている

Environmental pollution is causing abnormal weather conditions.
たいき
大気
はいき
排気
ガス
おせん
汚染
された

The air was polluted by exhaust gas.
せかい
世界
かんきょう
環境
おせん
汚染
もんだい
問題
ちょくめん
直面
しています

The world is confronted with the problem of environmental pollution.
おせん
BOOST
My flashcards:
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Usefulness and usage:
• This form is used about 10% of the time
• Google Japan frequency rank: 66,000 (about 5,290,000 results)
• This form appears in the 1998 'Ichimango goi bunruishuu' frequent word list by Senmon Kyouiku
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 3 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
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オ   きたな dirty   けが to defile, stain   けがれる to be defiled   けがらわしい dirty, defiled   よご to make dirty   よごれる to be dirty   
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reach
イチ   イツ   ひと    ひと- one   
スイ   みず water   
セン   し stain   しみる to soak in   そめる to dye   そまる to be dyed   
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氿
nine lots of water
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ク   キュウ   ここの nine   
モク   ボク   き    こ- tree   
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ダイ   タイ   おおきい big   おおいに very much   おお-    
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ジン   ニン   ひと person   
stick   
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