an abstract place usually conceived as having depth | productive work (especially physical work done for wages) |
a subpopulation divided into a stratified sampling | any piece of work that is undertaken or attempted |
people having the same social, economic, or educational status | a social class comprising those who do manual labor or work for wages |
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock) | an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement |
| concluding state of pregnancy; from the onset of contractions to the birth of a child |