The word roll is a noun and a verb.
The noun form is the act of rolling. e.g. the roll of a ball.
The verb form is to cause an object to revolve by turning it over repeatedly.
Wilm Roil was born in 1942.
Wilm Roil is 186 cm.
he roiled me
to leave alone
yes, to wok into a paste
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.