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.
Grass itself, as in the green vegetation, is a thing, therefore it is a noun.
To "grass someone up" (report them) is an action, so it is a verb.
A verb is a word that describes an action (run, walk, etc), a state of being (exist, stand, etc) or occurrence (happen, become, etc).
A noun is a word that is used to describe a person (man, lady, teacher, etc), place (home, city, beach, etc) or thing (car, banana, book, etc).
The verb to graze means to eat or feed on grass or pasture.
I/you/we/they grass. He/she/it grasses.
The present participle is grassing.
lawn
grassed
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.
describe
to tighten,
Corresponding verb to the noun central is centralise (or centralize)
Personification is a noun that refers to the literary device of attributing human qualities or characteristics to non-human things.
Advertisement is the corresponding noun to the verb advertise
The corresponding noun to the verb flee is flight.
The verb corresponding to the noun sleep is to sleep - slept - slept
The corresponding verb to statement is to state.