Why is 先 needed in アルバイト先で?


Based on my attempt below, アルバイト and アルバイト先 have the same meaning of "part-
time job", so why is 先 needed in アルバイト先で ?

The following searching results are intentionally attached here to prove I
have done some effort but I still failed to understand.

  * 先 ![enter image description here](https://i.stack.imgur.com/ncpFO.png)
  * アルバイト ![enter image description here](https://i.stack.imgur.com/74JYt.png)
  * アルバイト先 ![enter image description here](https://i.stack.imgur.com/qJ8ky.png)
  * アルバイトで ![enter image description here](https://i.stack.imgur.com/jJp61.png)
  * アルバイト先で ![enter image description here](https://i.stack.imgur.com/VkIFM.png)




先 attached in the ending of words usually defines the place where the noun
takes place. アルバイト先 means the place of the part time job. Sometimes Japanese
even say バイト先.




先 attached in the ending of words usually defines the place where the noun
takes place. アルバイト先 means the place of the part time job. Sometimes Japanese
even say バイト先.

