work vs labour

work and labour both are nouns.

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

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

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

work (noun)	labour (noun)
activity directed toward making or doing something	productive work (especially physical work done for wages)
the occupation for which you are paid	any piece of work that is undertaken or attempted
a product produced or accomplished through the effort or activity or agency of a person or thing	a social class comprising those who do manual labor or work for wages
a place where work is done	an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement
the total output of a writer or artist (or a substantial part of it)	concluding state of pregnancy; from the onset of contractions to the birth of a child
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 (verb)	labour (verb)
give a workout to	undergo the efforts of childbirth
arrive at a certain condition through repeated motion	work hard
go sour or spoil	strive and make an effort to reach a goal
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