Exploit
Part of speech: noun
Definition: A heroic or extraordinary deed. An achievement. A program or technique that exploits a vulnerability in other software.
Part of speech: verb
Definition: To use for one's own advantage.
Example sentence: Under capitalism, man exploits man. Under communism, it's just the opposite.
Effort
Part of speech: noun
Definition: The amount of work involved in performing an activity; exertion.An endeavour.
Example sentence: Happiness lies in the joy of achievement and the thrill of creative effort.