A semantic argument is when people argue about the meaning of words or phrases, and what those words or phrases really mean.
For example, let's say that two people are talking about the word "love." One person might think that love means always being nice and never getting angry, while the other person might think that love can include getting angry sometimes. They might argue back and forth about what love really means, and who is right.
In an argument like this, it's important to remember that sometimes different people have different ideas about what words mean. That's okay! It's important to try to understand each other's perspectives and communicate clearly to make sure everyone is on the same page.