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Both come up with the same reading and definition in Jisho.org
(round/circular), and both are listed as common words. Is there any preference
between the two or should I simply learn both as interchangeable?
CC BY-SA 3.0
2012-05-11T01:11:55.050
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2012-05-11T16:53:43.513
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question
word-choice kanji
Difference between 丸い and 円い
丸い generally refers to spherical objects like a globe.

円い generally refers to circular objects like a circle drawn on a page. Perhaps
also a physical object which is flat and round in shape (a 円 (yen) coin for
example)
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2012-05-11T01:18:34.200
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2012-05-11T01:18:34.200
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answer
円 is usually read えん, and reading it まる sounds like ateji, and is less common.
丸い should be used.
CC BY-SA 3.0
2012-05-11T16:53:43.513
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2012-05-11T16:53:43.513
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answer