換 means 'replace'

Animation / stroke order not available.
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Strokes : 12    Frequency: 924   JLPT: N2    Usefulness: 4    Study set: 4-11    Grade: 8   Intermediate lesson: 45    Beginner lesson: -   Begins 32 words   Used in 353 words   Used in 10 names   Not used as a component
Jōyō (常用)
   える to replace, to substitute
Kun   わる
⿰   () hand   brilliant  
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In the most useful 10,000 words in Japanese, 換 is used 8 times, read 2 ways.
Across all words in Japanese, 換 is used 341 times, read 2 ways (with 2 variations).
カン : 282 words FIND ALL
exchange; interchange; switching; reciprocity; barter; substitution; replacement; clearing (of checks, cheques)
(click the word for examples and links)
える : 56 words FIND ALL
4 3
Most common form: 乗りかえる
ichidan verb, transitive verb
1. to transfer (trains); to change (bus, train)
2. to change one's mind; to move on to (e.g. a new love interest); to change methods; to change one's way of thinking
(click the word to view an additional 3 forms, examples and links)
える (read as が) : 2 words FIND ALL
becoming a geisha (of a geisha apprentice)  (see also: 半玉, 舞子)
(click the word to view an additional 1 form, examples and links)
える (read as かえ) : 1 word FIND ALL
1. transfer (trains, buses, etc.); connection; connexion
2. switching (stock)  (economics term)
(click the word to view an additional 1 meaning and 6 forms, examples and links)
An additional 12 less common words include 換 but the reading has not yet been categorized.
Henshall: 1105  Joy o' Kanji : 1105  Key to Kanji:

Cascading kanji view

カン   かえる to replace, to substitute   
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カン brilliant, clear, bright   
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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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イチ   イツ   ひと    ひと- one   
ジン   ニン   ひと person   
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