Labour
Part of speech: verb
Definition: To toil, to work. To belabour, to emphasise or expand upon (a point in a debate, etc).
Part of speech: noun
Definition: Effort expended on a particular task; toil, work. Workers in general; the working class, the workforce; sometimes specifically the labour movement, organised labour. A political party or force aiming or claiming to represent the interests of labour. The act of a mother giving birth The time period during which a mother gives birth.
Manpower
Part of speech: noun
Definition: The total number of all available workers; the workforce.The power exerted by a single person (analogous to horsepower.)