Proact vs. React — What's the Difference?

To take action in advance of an expected event

To act in response to or under the influence of a stimulus or prompting

To act in opposition to a former condition or act

To act reciprocally or in return.

(Chemistry) To undergo a reaction

To cause (a substance or substances) to undergo a reaction.

(intransitive) To act in response.

To act or perform a second time; to do over again; to reenact.

To return an impulse or impression; to resist the action of another body by an opposite force

To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

To cause chemical agents to react; to cause one chemical agent to react with another.

To post a reaction icon or emoji indicating how one feels about a posted message.

(Internet) An emoji used to express a reaction to a post on social media.

To act or perform a second time; to do over again; to reenact; as, to react a play; the same scenes were reacted at Rome.

To return an impulse or impression; to resist the action of another body by an opposite force; as, every body reacts on the body that impels it from its natural state.

To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

Show a response or a reaction to something

Undergo a chemical reaction; react with another substance under certain conditions;

Act against or in opposition to;