Working
Part of speech: verb
Definition: To do a specific task by employing physical or mental powers.
Part of speech: noun
Definition: The action of the verb to work.
Part of speech: adjective
Definition: That is or are functioning. That suffices but requires additional work. In paid employment. Of or relating to employment. Enough to allow one to use something.
Example sentence: I learned the value of hard work by working hard.
Impermanent
Part of speech: adjective
Definition: Not permanent; momentary.