shell vs circumvent

shell is a noun but circumvent is not a noun.

Word	Noun	Adjective	Verb	Adverb
shell	Yes	No	Yes	No
circumvent	No	No	Yes	No

shell (noun)	circumvent (noun)
the hard largely calcareous covering of a mollusc or a brachiopod
hard outer covering or case of certain organisms such as arthropods and turtles
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
the housing or outer covering of something
a very light narrow racing boat
a rigid covering that envelops an object
the exterior covering of a bird's egg
the hard usually fibrous outer layer of some fruits especially nuts
the material that forms the hard outer covering of many animals

shell (verb)	circumvent (verb)
remove from its shell or outer covering	avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)
remove the husks from	beat through cleverness and wit
use explosives on	surround so as to force to give up
come out better in a competition, race, or conflict
hit the pitches of hard and regularly
look for and collect shells by the seashore
fall out of the pod or husk
create by using explosives