Honorarium (noun)

A payment made to someone for a service that is given voluntarily or for which it is customary to make some return, typically in recognition of an honor or distinction.

Origin:

The word "honorarium" comes from the latin word "honorarius" meaning done or given as a mark of honor or respect.

Examples:

1. The speaker received an honorarium for her presentation.
2. The writer was offered an honorarium for his article.
3. The musician was paid an honorarium for his performance.
4. The artist was given an honorarium for his exhibition.
5. The consultant was paid an honorarium for his services.