How to sign: an active and efficient cause; capable of producing a certain effect
"their research uncovered new disease agents";
Categories: causal agency, causal agent, cause
Within this category: biological agent, eliminator, impairer, infectious agent, lethal agent, motor, mutagen, quickener, relaxer, repressor, retardant, satisfier, shortener, stressor, teratogen, vasoconstrictor, vector, weakener
How to sign: a businessman who buys or sells for another in exchange for a commission
Similiar / Same: broker, factor
Categories: bourgeois, businessperson
Within this category: auctioneer, insurance broker, investment banker, realtor, ship broker, stockbroker, syndic, travel agent