What is the difference between "focus on" and "focus in". which one is correct regarding grammar?

Answer by YourHope:

Hi! :)

The difference between "focus on" and "focus in" is that focus on literally means to focus on something. You are putting all your attention on a specific thing, while focus in is incorrect.

:)

well, there are online sites that can make it look like a texting screenshot, so u can make it like hamilton texting jefferson through that, and he can start with him being like, i know it's out of the blue, but blah blah blah

one context clue that me find the meaning of luxuriance was that the base word of luxuriance is luxury, so i think that luxuriance means something that is luxury, or something luxurious.