Incitation and Reactant

Incitation noun - Something that arouses a strong response from another.

Reactant and incitation are semantically related In some cases you can use "Reactant" instead a noun "Incitation".

Reactant noun - A chemical substance that is present at the start of a chemical reaction.

Incitation and reactant are semantically related in catalyst topic. You can use "Incitation" instead a noun "Reactant", if it concerns topics such as something which incites activity.