Stimulant, motivation and incentive are words. Those mean catalyst.
For example the ammonia production; the magnetite catalyst is the most common.
THE NAME OF THE CATALYST WHICH HASTENS THE RATE OF REACTION OF FOOD BUT DOES NOT PART IN THE DIGESTION IS KNOWN AS A CATALYST KNOWN AS MAGANESE(IV)OXIDE.
one name for a catalyst is... to be onis i have no idea myself xxx
Platinum, palladium and rhodium are metals used as catalyst in converters.
biological catalysts
bait, catalyst, encouragement, consideration.
inhibitor
Catalyst
The enzyme that activates another enzyme is called a kinase. Kinases add phosphate groups to proteins, a process known as phosphorylation, which can activate or deactivate the target enzyme.
Enzymes
I'm not sure that its a synonym, but it is a biological catalyst
A catalyst is a character tha brings about change in the story. For example, a catalyst's actions could cause one character to lose trust in another, or something of the sorts. Basically, if the story takes a different course because of a certain character, that character would be a catalyst.