Difference between 意志｛いし｝ and 志し｛こころざし｝ (will)


I learnt both 意志{いし} and 志し{こころざし}, but am always confusing the two of them.

Can someone highlight the differences between those 2 words (and other
variants if any) ?




> 意志{いし}

It's just the **will** or **desire** of doing anything. **やろう** とする気持{きも}ち。

  * 今週中{こんしゅうちゅう}にそのプロジェクトをやり遂げるという意志がある。

> 志{こころざし}

Including the meaning of 意志{いし}, it's the **determination** or **resolution**
to carry out a higher, long term goal or objective. It's not just the will,
but the **ambition** , **aspiration** and **resolve** to do something.

  * 志{こころざし}は高{たか}く持{もつ}つべきだ。
  * 将来{しょうらい}博士{はかせ}になるという志{こころざし}を持{も}つ。

志{こころざし} is mostly used in the written language, as opposed to 意志, not
uncommon in spoken conversation at all.

A variant could be
[意向{いこう}](http://ejje.weblio.jp/sentence/content/%E6%84%8F%E5%90%91?catId=business)
used in business contexts to mean intention or
[つもり](http://ejje.weblio.jp/content/%E3%81%A4%E3%82%82%E3%82%8A).




> 意志{いし}

It's just the **will** or **desire** of doing anything. **やろう** とする気持{きも}ち。

  * 今週中{こんしゅうちゅう}にそのプロジェクトをやり遂げるという意志がある。

> 志{こころざし}

Including the meaning of 意志{いし}, it's the **determination** or **resolution**
to carry out a higher, long term goal or objective. It's not just the will,
but the **ambition** , **aspiration** and **resolve** to do something.

  * 志{こころざし}は高{たか}く持{もつ}つべきだ。
  * 将来{しょうらい}博士{はかせ}になるという志{こころざし}を持{も}つ。

志{こころざし} is mostly used in the written language, as opposed to 意志, not
uncommon in spoken conversation at all.

A variant could be
[意向{いこう}](http://ejje.weblio.jp/sentence/content/%E6%84%8F%E5%90%91?catId=business)
used in business contexts to mean intention or
[つもり](http://ejje.weblio.jp/content/%E3%81%A4%E3%82%82%E3%82%8A).

