is a specific kind of: check, contain, control, curb, hold, hold in, moderate.

is a broader term that covers: choke back, choke down, choke off | hush, hush up, quieten, shut up, silence, still | burke | silence | quell, quench, squelch | quench.

derivation: conquering, conquest, subjection, subjugation | crushing, quelling, stifling, suppression | curtailment, suppression | suppresser, suppressor | conqueror, vanquisher | overcomer, subduer, surmounter | suppresser, suppressor | suppressive.