3 Riddles - Need help fast...Thanks everyone

Riddle 1:

The following puzzle consists of one word that can be split into two words.

One word: containing wall apertures

Two words: 1) strong breeze 2) due, as a debt


Riddle 2:

Find the word for a kind of marker, then change one letter to find a word that means "old and not fresh."

Find the word for an amount of money, then change the first letter to find the word for a neck ornament.