work vs cast

work and cast both are nouns.

Word	Noun	Adjective	Verb	Adverb
work	Yes	No	Yes	No
cast	Yes	No	Yes	No

As verbs, cast is a hyponym of work; that is, cast is a word with a more specific, narrower meaning than work:

work (noun)	cast (noun)
activity directed toward making or doing something	the act of throwing dice
the occupation for which you are paid	the act of throwing a fishing line out over the water by means of a rod and reel
a product produced or accomplished through the effort or activity or agency of a person or thing	a violent throw
a place where work is done	object formed by a mold
the total output of a writer or artist (or a substantial part of it)	bandage consisting of a firm covering (often made of plaster of Paris) that immobilizes broken bones while they heal
applying the mind to learning and understanding a subject (especially by reading)	container into which liquid is poured to create a given shape when it hardens
(physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force	the visual appearance of something or someone
	the actors in a play
	the distinctive form in which a thing is made

work (verb)	cast (verb)
give a workout to	eject the contents of the stomach through the mouth
arrive at a certain condition through repeated motion	formulate in a particular style or language
go sour or spoil	choose at random
cause to undergo fermentation	throw forcefully
find the solution to (a problem or question) or understand the meaning of	to remove
use or manipulate to one's advantage	form by pouring (e.g., wax or hot metal) into a cast or mold
to mix into a homogeneous mass	select to play,sing, or dance a part in a play, movie, musical, opera, or ballet
perform as expected when applied	put or send forth
move into or onto	move about aimlessly or without any destination, often in search of food or employment
shape, form, or improve a material	deposit
cause to happen or to occur as a consequence	assign the roles of (a movie or a play) to actors
prepare for crops
make something, usually for a specific function
gratify and charm, usually in order to influence
proceed along a path
move in an agitated manner
provoke or excite
be employed
cause to work
exert oneself by doing mental or physical work for a purpose or out of necessity; work
have an effect or outcome; often the one desired or expected
operate in a certain place, area, or specialty
proceed towards a goal or along a path or through an activity
have and exert influence or effect
operate in or through
cause to operate or function
behave in a certain way when handled