The word 'grass' is both a noun and a verb.
The noun 'grass' is a word for any of a large family of green plants with jointed hollow stems and long slender leaves; a word for an area covered with this type of plant; a word for a thing.
The verb avert does not have a corresponding noun, it does, however, have a corresponding adjective: avertable.
There is no verb corresponding to the adjective voracious.
The verb "to govern" is the verb form of the noun government.
No solution is a noun. Solve is the corresponding verb.
to tighten,
describe
Corresponding verb to the noun central is centralise (or centralize)
Advertisement is the corresponding noun to the verb advertise
The corresponding noun to the verb flee is flight.
Explode, explodes, exploded. The dynamite exploded on contact.
The noun forms of the verb to widen are widener and the gerund, widening.A related noun form is width.
The verb corresponding to the noun sleep is to sleep - slept - slept