aktiivsus(A pattern of work performed together for a single purpose. An activity may use or produce work products and may be tracked by a work item); tegevus(In a statechart diagram, the response an object in a particular state makes to an event without changing its state. Unlike actions, activities have non-negligible execution times and can be interrupted. The keyword do indicates an activity)
aktiivsus(tegutsemisvalmidus, toimekus Vastand passiivsus); tegevus(inimese teadlik vaimne ja kehaline aktiivne tegutsemine); toiming(eesmärgistatud ja suhteliselt iseseisev tegevuse osa)
