The colors of a newfound word?

"The susurrus of curtains," 5 x 7, cold press paper

When I'm reading books and discover a word I don't know, I usually circle or underline it. Then at the end of the chapter, I go back and look it up, usually to forget it. Thus it was with a word I found in Larson's Isaac Storm, earlier this month.
But reading Watership Down just recently, it was used in a different context.
"Susurrus." 
Have you ever heard that beautiful sounding word before? It just sort of begs to be looked up, doesn't it?
It was one of several intriguing words I discovered in recent books. Do you know these: "luffed," virga," "soffit," "mesoscale," "furricking"?
I didn't either, and looking them up, I found a familiar word, "fretting," used in a different way.
Here are the three uses of the word "Susurrus" I found.
 Isaac's Storm: "He heard the susurrus of curtains luffed by the breeze."
Watership Down: referring to trees at the edge of the meadow in a breeze.
 OED, example: "Plover fretted the horizon with the dark susurrus of their winds."
Huh? "fretted"?
Oh, the definition of "susurrus"? "A whispering, murmuring, humming, rustling."
Beautiful words. I though of those lace window curtains beautifully described in the slight pre-hurricane breeze in Isaac's Storm.
Today's watercolor,  "The susurrus of curtains."
And if you want to know the meaning of those other words, look them up.