voluntary - uncharged (fee), offered, done willingly⏎
wind-up - close down, liquidate, terminate, cease⏎
territory - area, zone, ground, pitch⏎
skill - ability, competence, expertise, dexterity⏎
salary - wages, pay, earnings⏎
unveil - introduce, disclose, show (something)⏎
transferable - moveable, negotiable, transportable, communicable⏎
value - worth, price, importance⏎
uneconomic - wasteful, unprofitable⏎
static - unchanging, undeveloping, not moving⏎