約束【やくそく】
promise, agreement, arrangement, one's word, contract, pact, appointment, engagement, date, convention, rule, destiny, fate
結束【けっそく】
union, unity, solidarity, bundling, binding, tying, putting on (clothes, armour, etc.)
拘束【こうそく】
restriction, restraint, binding, constraint
花束【はなたば】
bunch of flowers, bouquet
札束【さつたば】
roll of banknotes
束縛【そくばく】
restraint, restriction, fetters, yoke, shackles, binding, confinement with rope
束ねる【たばねる】
to tie up in a bundle (e.g. straw, hair, bills, letters), to bundle, to sheathe, to govern, to manage, to control, to administer, to fold (one's arms), to put together (one's hands)