The number of reactions on your ads (or posts for organic). The reactions button on an ad/post allows people to share different reactions to its content: like, love, haha, wow, sad or angry.

Number of positive reactions your ad received. Reactions show the number of times people have applied a Like, Celebrate, Love, Insightful, or Curious in response to your update.

The number of people who liked your ad by clicking the heart button.