An action is a reaction when something happens and we respond in some way.
When we react to something, it means we're responding or acting in response to what's going on around us. It can be good or bad - for example, if someone cuts you off while driving, your natural reaction might be to honk the horn. If you spill coffee all over your shirt, your reaction could be to quickly grab some paper towels to clean it up. Sometimes people react with strong emotions like anger or sadness, and sometimes they react calmly and thoughtfully. The key is that our reaction shows how we feel about what's happening and how we choose to respond to it.
An emoji used to express a reaction to a post on social media.
Example: Sad reacts only
To act or perform a second time; to do over again; to reenact.
