(formal) act, deed

action (something done so as to accomplish a purpose) / activity, activeness

agent (active power, cause, or substance) / factor

(idiomatic) one swallow does not a summer make

(usually in the plural) clash cymbal, one of a pair of cymbals played by holding one in each hand and striking them against one another

(idiomatic) opportunity makes a thief (most theft happens when it requires little effort, e.g. when valuables are left unattended in plain sight)

(transitive) to make, do

rent (payment made by a tenant)

third-person singular present of czynić

genitive singular of czynienie