Than

Comparing one thing to another

"This is better than that

Its

Belongs to or associated with a thing previously mentioned or easily identified.

It has
It is

"The camera is on its side"

Man

A singular male; not plural

"He is a man"

There

For the idiots:

There: a place

"THERE is a new store at the mall"
"There you are!"

Loose

Note firmly tightened or right in place; to free or release; to not fit tightly

"That knot is loose"
"I let the dog loose"
"She likes loose coats"

They're

Did the idiots:

They're: they are

"They're short"
"They're hot"

Prove

To demonstrate the truth or existence of (something) by evidence or argument; demonstrate to be specified thing by evidence or argument

"He needs to prove it"
"Prove it"