Abandonment means when someone that you love and care about is no longer around or doesn't pay attention to you in the way that you need them to. This can happen in many different ways, like if a mommy or a daddy goes away and doesn't come back, or if a friend stops playing with you and doesn't want to be your friend anymore.
Emotional abandonment is when someone doesn't show you love or attention in the way that you need them to, even if they are physically still around. This can make you feel very sad and lonely, like you are all by yourself and nobody cares about you. It's important to tell someone you trust about how you feel so they can help you feel better and loved again.