What is the – ness word common to all four pictures?

What is the – ness word common
to all four pictures?
??? - ness
GOODNESS
He believes in human goodness.
My goodness!
Thank goodness!
Brown bread is full of goodness!
??? - ness
HAPPINESS
The research suggests that happiness is a
combination of how satisfied you are with
your life (for example, finding meaning in
your work) and how good you feel on a
day-to-day basis.
(http://www.happify.com/hd/what-is-happiness-anyway/)
??? - ness
WITNESS
God be my witness.
I witnessed the accident.
eyewitness
??? - ness
DARKNESS
??? - ness
SICKNESS / ILLNESS
• I suffer from seasickness on a boat.
??? - ness
LONELINESS
??? - ness
AWARENESS
??? - ness
BUSINESS
??? - ness
BRIGHTNESS
??? - ness
SADNESS
??? - ness
RICHNESS
??? - ness
FRESHNESS
THE END