The word 'billow' functions as both a verb and a noun.
Examples:
We watched the clouds billow in the breeze. (verb)
A billow of smoke from the campfire enveloped the campers. (noun)
He watched the cumulus clouds billow as the winds blew them over the mountaintop. (verb) A huge billow of smog engulfed the valley below the factory. (noun)
I saw a huge billow down by the beach yesterday!
Her cape billowed around her ankles as she strode into the sunset.
The word 'billow' is both a noun (billow, billows) and a verb (billow, billows, billowing, billowed).The noun billow is a singular, common, concrete noun; a word for a large undulating mass, such as a cloud, smoke, or steam; a rolling mass like a high wave; a word for a thing.The verb to billow is to to fill with air and swell outward; to rise or roll in waves.
Wave , swell , surge ,
cave in, depress, decline, recede
I think you mean billowing.The sheets are billowing in the wind.The smoke is billowing from the chimney.
Can you use the word concluding in a sentence? Done.
You can use the word Truss in a sentence like this.
Just use it! Or do you mean, can you use the word beheld in a sentence.
How do you use the word decibel in a sentence?What is decibel used for?
Since that is not a word I would not attempt to use it in a sentence.