[Vocabulary] save vs. save on?

[ZOEYW]

What is the difference between save and save on?

When I change the save to the phrase save on, my friend got what I meant ultimately, I have no idea does that makes any difference? What I want to say is to save money on printing fees (unnecessary to pay the fees), but my friend changes it to save on money.

THANKS,

 

[Barb_D]

Hello Zoey,
Your friend should have left your sentence alone.

You save money.
You save money on printing fees.
If you have a car with good gas mileage, you save on gas.
But you don't "save on money."

 

[MikeNewYork]

Hello Zoey,
Your friend should have left your sentence alone.

You save money.
You save money on printing fees.
If you have a car with good gas mileage, you save on gas.
But you don't "save one money."

Typo alert! Change "one" to "on"

 

[emsr2d2]

Typo alert! Change "one" to "on"

Already edited on Barb's behalf before I saw your post.