By or Bye?

So what's the difference between "by" and "bye"? 

By

"By" is a very common word that has many different meanings. 

Here are some common ones together with examples.

1) Near somebody or something. 

Examples:

• I am standing by the tree.
• She will be waiting by the bus station. 
• The car is by the house.

2) Not later than a certain time. 

Examples:

• I will be home by seven o'clock.
• Mr. Jones will return by next week.
• I'm sure you will finish your homework by dinner.

3) Used to show who did the action. 

Examples:

• The window was broken by Joe.
• The robber was caught by the police.
• He was hit by a car.

Now, the word "bye" is a totally different story... 

Bye

Bye = a short informal version of the word "goodbye."

This is a word you use when you leave, or when someone else leaves. 

Examples:

• Bye! See you soon!
• Bye for now!
• Bye-bye, see you next week.

"Bye" is a shortened version of "goodbye."

The word "goodbye" comes from "godbwye."
This is the short form of "God be with ye," which means "God be with you."