lock

bolt grip latch

bar bond catch clamp clasp clinch connection fastening fixture grapple hasp hook junction link padlock

key

close engage join press seal shut

bar bolt button clench clutch embrace encircle enclose entwine grapple grasp hug latch link mesh secure unite

button up turn the key

disjoin open release unseal

divide let go loose loosen separate unfasten unlock unloose

unclasp