無 means 'not'

Animation / stroke order not available.
Strokes : 12    Frequency: 151   JLPT: N4    Usefulness: 2    Study set: 2-4    Grade: 4   Intermediate lesson: 8    Beginner lesson: -   Begins 851 words   Used in 1389 words   Used in 598 names   Component in 15 kanji (1 Jōyō)
Jōyō (常用)
   ム   ブ
(not, nothing) is considered a simplification of 無. However, (not, nothing) is usually classified as a radical, this form 無 is not - this form is considered to use (fire) as its radical.
⿱  ⿳  𠂉 () man      one   () fire  
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In the most useful 10,000 words in Japanese, 無 is used 40 times, read 3 ways.
Across all words in Japanese, 無 is used 1324 times, read 3 ways (with 1 variation).
ム : 839 words FIND ALL
1. unreasonable; unnatural; unjustifiable
2. impossible
(click the word to view an additional 4 meanings, examples and links)
ブ : 61 words FIND ALL
safety; peace; quietness  (see also: 無事に)
(click the word for useful expressions, examples and links)
: 423 words FIND ALL
Most common form: 台なし
mess; spoiled; spoilt; (come to) nothing; ruin
(click the word to view an additional 4 forms, examples and links)
(read as ない) : 1 word FIND ALL
1. ninja throwing knives  (colloquialism)
2. mediaeval farming tool for digging, prying, etc.  (orig. meaning)
(click the word for examples and links)
An additional 65 less common words include 無 but the reading has not yet been categorized.
Henshall: 620 (originally: 796)  Joy o' Kanji : 796  Key to Kanji: 997 

Cascading kanji view

ム   ブ   な not   
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