work vs sour

work and sour both are nouns.

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

As verbs, work and sour are synonyms defined as:

Other synonyms of work include ferment, turn.

work (noun)	sour (noun)
activity directed toward making or doing something	the property of being acidic
the occupation for which you are paid	the taste experience when vinegar or lemon juice is taken into the mouth
a product produced or accomplished through the effort or activity or agency of a person or thing	a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
a place where work is done
the total output of a writer or artist (or a substantial part of it)
applying the mind to learning and understanding a subject (especially by reading)
(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 (adjective)	sour (adjective)
	having a sharp biting taste
	showing a brooding ill humor
	inaccurate in pitch
	smelling of fermentation or staleness
	in an unpalatable state
	one of the four basic taste sensations; like the taste of vinegar or lemons

work (verb)	sour (verb)
give a workout to	go sour or spoil
arrive at a certain condition through repeated motion	make sour or more sour
go sour or spoil
cause to undergo fermentation
find the solution to (a problem or question) or understand the meaning of
use or manipulate to one's advantage
to mix into a homogeneous mass
perform as expected when applied
move into or onto
shape, form, or improve a material
cause to happen or to occur as a consequence
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