Have you ever heard someone say, "That's just semantics?" Basically, they're saying you're picking apart the meaning of a word to draw a different conclusion but it all means the same thing. It's possible the person saying, "It's just semantics," is wrong, though.
Semantics is the study of the relationship between words and how we draw meaning from those words. People can absolutely interpret words differently and draw different meanings from them. Some examples of semantics will help you see the many meanings of English words.