Preposition:
* Purpose or reason: Indicates the goal, aim, or reason for something.
* Example: "I went to the store for milk."
* Duration: Indicates the length of time something lasts.
* Example: "He worked for five years."
* Direction: Indicates the direction of movement or a place.
* Example: "He looked for the exit."
* Benefit or advantage: Indicates who or what something is intended for.
* Example: "This gift is for you."
Conjunction:
* Reason: Indicates the reason for something.
* Example: "I stayed home for it was raining."
* Exchange or equivalence: Indicates something is given in exchange for something else.
* Example: "I'll give you this book for five dollars."
Other uses:
* Interjection: Used to express surprise or disapproval.
* Example: "For goodness sake!"
In programming:
* For loop: A control flow statement that repeats a block of code a specified number of times.
* Example: "for (int i = 0; i < 10; i++) { ... }"
It's important to consider the context of the sentence to determine the specific meaning of "for."