Components
いっしゅう is an exact match with one form of the following word:
一週
BOOST
Reading : いっしゅう   
adverbial noun (fukushitekimeishi)
one week  (see also: 一週間)
My mastery:
My current mastery of 一週:
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My flashcards:
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Usefulness and usage:
Kanshudo usefulness level: 8 (among the 30,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 57,275 which gives a rank of 18,833
一週 is the most useful form. 2 additional forms are shown below.
• This form is almost always used
• Google Japan frequency rank: 26,000 (about 23,900,000 results)
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 44 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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Example sentences:
この
まち
1週
なんかい
何回
ごみ
あつ
めます

How many times a week do they collect garbage in this town?
いっしゅう
BOOST
My flashcards:
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Usefulness and usage:
• This form is rarely used
• Google Japan frequency rank: 193,000 (about 320,000 results)
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 44 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
VIEW INFLECTIONS
1週
BOOST
Reading : いっしゅう   
My flashcards:
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Usefulness and usage:
• This form is rarely used
• Google Japan frequency rank: 46,000 (about 11,000,000 results)
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イチ   イツ   ひと    ひと- one   
シュウ    a week   
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シュウ   まわ circumference   
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ド   ト   ground; earth   つち ground, earth, soil   
wide
コウ   ク   くち mouth   
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move
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