The only noun I know derived from the verb to entomb would be the noun entombment.
It is an abstract noun, which means that it doesn't have a physical shape - you cannot touch it or smell it, just like with love, or hate, or happiness. Entombment is the process of placing a dead body into a tomb, or a grave.
Yes, father said, “I’ll be home by ten.”
You should consider where your going to put it and what your going to do if you succeeded. And whats going to go on the trap to catch whatever it is your trying to catch