rheumatism - n. a disease that causes stiffness and pain in the muscles and swelling and pain in the joints

emerge - v. to rise or appear from a hidden or unknown place or condition

lumber - n. ​wooden boards or logs that have been sawed and cut for use​

exposure - n. ​the fact or condition of being affected by something or experiencing something​

elaborate - adj. made or done with great care or with much detail

creek - n. ​a small stream

trough - n. ​a long, shallow container​