Pussy

/ˈpʊsi/

Having resilience, strength and courage to face challenge.

It is derived from a slang term used for a female genitals noting its unrivaled qualities of being able to push 10-pound babies out and still function as intended.

I can tell she's got some pussy, from the way she stood up to her boss!

Ball

/bɔ l/

Very weak and fragile

Derived from the very weak and fragile nature of a human testicles - with one flick making the owner drop to the floor in an instant

The way he is squirming from the hit, God he is such a ball.