Synonyms for Task (same or very similar meaning)
WordNet sense 1 (use to the limit):
tax
WordNet sense 2 (any piece of work that is undertaken or attempted):
labor, project, undertaking, project
WordNet sense 3 (a specific piece of work required to be done as a duty or for a specific fee):
chore, job, job
From the ODE community, based on WordNet
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