work vs rack

work and rack both are nouns.

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

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

Other hyponyms of work include hot-work, cold work, coldwork, overwork, make over, retread, rework, tool, till.

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

Other hyponyms of work include exercise, work, work out, computerise, computerize, cybernate, exploit, overwork.

work (noun)	rack (noun)
activity directed toward making or doing something	a rapid gait of a horse in which each foot strikes the ground separately
the occupation for which you are paid	a form of torture in which pain is inflicted by stretching the body
a product produced or accomplished through the effort or activity or agency of a person or thing	a support for displaying ot holding various articles
a place where work is done	an instrument of torture that stretches or disjoints or mutilates victims
the total output of a writer or artist (or a substantial part of it)	the destruction or collapse of something
applying the mind to learning and understanding a subject (especially by reading)	rib section of a forequarter of veal or pork or especially lamb or mutton
(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

work (verb)	rack (verb)
give a workout to	torture on the rack
arrive at a certain condition through repeated motion	seize together, as of parallel ropes of a tackle in order to prevent running through the block
go sour or spoil	place in a rack
cause to undergo fermentation	work on a rack
find the solution to (a problem or question) or understand the meaning of	stretch to the limits
use or manipulate to one's advantage	torment emotionally or mentally
to mix into a homogeneous mass	go at a rack
perform as expected when applied	draw off from the lees
move into or onto	run before a gale
shape, form, or improve a material	fly in high wind
cause to happen or to occur as a consequence	obtain by coercion or intimidation
prepare for crops	put on a rack and pinion
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