The english language is so weird

I found the coolest word today- its antagonym (also reffered to as a Contronym)-- which is a word that has 2 meanings that contradict each other
some of my favorites are:
Bound: Moving ("I was bound for Chicago") vs. Unable to move ("I was bound to a post", or less literally, "I was bound to my desk")
Clip: to attach vs. to cut off
custom - usual(it was our custom) vs. special(it was custom made)
Left: To remain (we are the only ones left at the party)vs. to have gone (he left the house)
Refrain: In song, meaning to repeat a certain part vs. To stop (Please refrain from using bad language)
Rocky: Firm, steadfast vs. tending to sway
Transparent: Easily seen ("His motives were transparent.") vs. invisible (the plastic was transparent)
Trim: To add things to (trim a Christmas tree) vs. or take pieces off (trim hair)
put out - extinguish(she put out the light), generate (The stove puts out heat)
weather - withstand( to weather the storm) wear away (the stone was weathered)

There is also the word Pseudopposites which are oppostie phrases that mean the same
Such as:
Burned up, Burned down: (Both mean destroyed.)
Fat chance; slim chance: (Both mean "not too likely")
Cool; hot: (Both mean wonderful [Slang], e.g., when applied to a car)