When we talk about major and minor, we are usually talking about two different things: music and emotions.
In music, major and minor refer to two different ways of playing a tune. When we play a major tune, it sounds happy, bright, and cheerful. Think of a song you might hear at a birthday party or a celebration. On the other hand, when we play a minor tune, it sounds sad, dark, and sometimes spooky. Think of a song you might hear in a scary movie or at a funeral.
In emotions, major and minor refer to how we feel. When we feel major, we feel happy, excited, and full of energy. When we feel minor, we feel sad, upset, or worried.
So, when we hear someone talking about major and minor, we need to pay attention to the context. If they're talking about music, they're probably talking about happy or sad tunes. If they're talking about emotions, they're probably talking about happy or sad feelings.