An accomplishment or achievement that brings satisfaction or happiness is called fulfillment.
Imagine getting your dream job - it's like finding something that finally makes sense with all the hard work and studying you've done. That's a feeling of fulfillment. You feel happy and content because you've reached your goal, and now you know exactly what to do next.
The word "fulfillment" can also refer to the act of providing or obtaining something that someone needs or wants. For example, when an online shopping platform promises fast shipping, it's promising a certain level of fulfillment - they'll deliver what you ordered on time.
The act of fulfilling.
