Does _ age?

Hey all , just a quick question. This might be a RAFO, but my curiosity gets the best of me. I’ve read Mistborn Era 1, and I’m just about done with Way of Kings. Just finished the chapter where Hoid told Kaladin the amazing story about Derethil and the Wandersail.

My question being, does Hoid age? From reading posts on this subreddit, I know Hoid was the Terris leader at the end of WoA. This character is described as old, whereas the beggar he plays in TFE and HoA isn’t described this way (or maybe I missed that part). And the Wit in WoK isn’t described this way either. Does he age? Or can he just take any form he wants?

Also, kind of side question. Does Mistborn take place before or after Stormlight on the Cosmere timeline? Was he on Roshar before Scadriel or vice versa?

edit: Question has been answered! Thanks, you guys are awesome 😎