What is the difference between '割り引き' and '割引'?


What is the difference between '割り引き' and '割引'? Both pronounced as
'waribiki',meaning 'discount'.  
Can somebody kindly advise, thanks.




**割引** is the orthographically recommended form to represent the _noun_ that
means "discount".

**割り引き** is the recommended form to represent the 連用形 of the _verb_ 割り引く "to
discount". It's most likely to be used as a part of the polite form e.g.
割り引きます.

I wrote "recommended" because this part of Japanese orthography
([1](http://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/okurikana/honbun06.html),
[2](http://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/okurikana/honbun07.html))
tolerates a certain degree of freedom (Japanese orthography isn't technically
compulsory either, but it's another problem).

* * *

Below is the frequency data from
[BCCWJ](http://pj.ninjal.ac.jp/corpus_center/bccwj/en/) for your information:

  * Noun 
    * 割引: 1371
    * 割引き: 45
    * 割り引き: 38
  * Verb (連用形-一般) 
    * 割り引き: 5




**割引** is the orthographically recommended form to represent the _noun_ that
means "discount".

**割り引き** is the recommended form to represent the 連用形 of the _verb_ 割り引く "to
discount". It's most likely to be used as a part of the polite form e.g.
割り引きます.

I wrote "recommended" because this part of Japanese orthography
([1](http://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/okurikana/honbun06.html),
[2](http://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/okurikana/honbun07.html))
tolerates a certain degree of freedom (Japanese orthography isn't technically
compulsory either, but it's another problem).

* * *

Below is the frequency data from
[BCCWJ](http://pj.ninjal.ac.jp/corpus_center/bccwj/en/) for your information:

  * Noun 
    * 割引: 1371
    * 割引き: 45
    * 割り引き: 38
  * Verb (連用形-一般) 
    * 割り引き: 5

