Unrefined and Untilled

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

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

Untilled adjective - Not plowed or harrowed or hoed.

Unrefined and untilled are semantically related. Sometimes you can use "Unrefined" instead an adjective "Untilled".