Penwest rhymes with:
eastern-west, addwest, bequest, eastern-west, farwest, key_west, midwest, natwest, northwest, norwest, quest, request, southwest, stateswest, telequest, telewest, west
Penwest sounds like:
panamsat, pancaked, pancoast, panicked, pianist, pinched, pinged, pinkest, pinkett, pinochet, poinsett, poinsettia, poncet, ponzetti, pounced, punched, punctate, punctuate, punctuated, punished