If the moon fell down

Guilt is a weird thing. What is it exactly? It seems kind of like sympathy but then, what is sympathy? A feeling? And what constitutes a feeling? It's all very confusing. Feelings in general confuse the shit out of me. Who named them? Who first felt them and what right did they have to classify them? I don't think they should have names. I know we need words to describe things to other people, but can't we just stay private about some things? And feelings like guilt and sympathy and love deserve so much more than a vague few syllable word. Plus, how do we know that the word we're using to describe a feeling is the same word someone else is using for a completely different feeling? What if what I feel and interpret as guilt is what someone else feels for and interprets as apathy? When you think about it, that can apply to everything, especially colors. How do we even know anything for certain and how can we trust everything for real?