Hillbilly and Unrefined

Hillbilly noun - An awkward or simple person especially from a small town or the country.

Unrefined and hillbilly are semantically related. In some cases you can use "Unrefined" instead an adjective "Hillbilly".

Unrefined adjective - Being such as found in nature and not altered by processing or refining.

Hillbilly and unrefined are semantically related. Sometimes you can use "Hillbilly" instead an adjective "Unrefined".