Answer:
My first is equality; my second is inferiority; my whole is superiority.
What weaves webs as they grow?
What can you throw but not catch?
I am the tool, for inspiring many. Buy me in the store, for not much more than a penny. Don't overuse me, or my usefulness will go.
A hill full, a hole full, yet you cannot catch a bowl full.
What do angels sing in the shower?