Yes, the noun 'couch' is a common noun, a general word for a type of furniture.
The word 'couch' is also a verb.
I've got my PC and my comfy couch.
Common noun
Yes
The couch said not to bunt but the player still did!
Don't throw out your old couch; you can still get it reupholstered.
use it by saying- how can you use the word ebullient in a sentence?
Just use it! Or do you mean, can you use the word beheld in a sentence.
You can use the word feces in a sentence to mean excrement.
It was Saturday and I was relaxing on the couch
How can you use the word round in a sentence as a noun
Bobby ate the raisin he found in the couch
The couch said not to bunt but the player still did!
Don't throw out your old couch; you can still get it reupholstered.
the chipmunk left a pelt on the couch when it got scared
This is a sectional couch.
easy just put my brother is such a couch potatoe
You can use the word "refurbish" a the sentence like, "I can refurbish this old table in no time."
The boy ribbed the couch.
This is a cozily couch for me
This couch is very plush!