u/Financial-Ad-4796

I just finished the anime and im confused between the two words. Can they be used interchangeably? At first i thought demon blight meant like the plague where they turn living beings into faeries. But >!rhyno introduced himself as a demon blight and some other demons were introduced as demon blight aswell. !<but spriggan was introduced as a demon king. I watched it on netflix so there might be translation issues.