hearts
"Hearts" is a fascinating word with several layers of meaning. It is the plural form of "heart," and it carries both physical and emotional senses. Here are the most common and useful ones.
This is the most literal meaning. Your heart is the muscle inside your chest that pumps blood around your body. When you talk about more than one, you say 'hearts' — for example, when referring to the hearts of different animals or people in a medical context.
biology / medicine · Modern, widely used
You may see 'hearts' used as a verb, especially online or in informal writing, meaning 'loves' or 'really likes.' It comes from the heart symbol (♥) used to express love. For example, 'She hearts chocolate' means she loves chocolate. This is very casual and mostly seen in social media.
informal / social media · Modern, informal — common in online language · figurative