She agreed to help him 'out of the goodness of her heart'. [=because she is a kind and generous person]
He finally got a raise. 'Goodness knows' he deserved one. [=he certainly deserved one]
If you cook the vegetables too long, they'll lose all their (natural) 'goodness'.
(..) Oh, you don't swallow it. It's just temporary till the plumbing's done. Hey, y'all look hungry. How would you like some of nature's goodness? You have food? The Fun Side Special, coming up. Seaweed on a stick. Seaweed? On a stick. Don't love it till you try it. (..)2005 Madagascar