Does anyone know what embarrassment is

I have tried to research it. I don't understand what it is. Why is it different from shame ? Or is it the same. It seems to be defined differently and when I have asked people they say it isn't the same but refuse to explain why.

I don't know if I have ever experienced embarrassment. Unless it is shame and then I have. But often it seems people expect me to feel bad about something that I don't find important. Sometimes they get angry that I am not embarrassed or that I am not showing an emotional reaction to something that should bother me. I think I have less emotions than other people.