Ache

Part of speech: noun (n.)

Continued pain, as distinguished from sudden twinges, or spasmodic pain. "Such an ache in my bones." Shak.

Part of speech: verb (v.)

To suffer pain; to have, or be in, pain, or in continued pain; to be distressed. "My old bones ache." Shak. The sins that in your conscience ache. Keble.