Nouns:
* Occupations and Roles: actor, advisor, author, baker, conductor, doctor, editor, engineer, inventor, lawyer, operator, painter, professor, sculptor, teacher, writer
* Tools and Devices: accelerator, calculator, elevator, generator, indicator, monitor, projector, regulator, separator, tractor
* Concepts: color, error, favor, horror, humor, odor, rumor, valor
* Other: donor, governor, juror, mayor, motor, sailor, visitor
Verbs:
* Past participles: adored, explored, ignored, restored, secured
* Present participles: occurring, soaring, snoring
Adjectives:
* Descriptive: inferior, superior, prior, posterior
Other:
* Interjections: Oh, no!
Remember:
* "-or" is often used to indicate a person or thing that performs a specific action or has a specific quality.
* It can also be used to form nouns from verbs.
This is just a small sample. There are many more words ending in "-or." To find more, you can use a dictionary or online resources like a word list generator.