You can say that people who identify as introverts use more concrete language, but there's no reliable way to identify intro/extraversion because it's about as scientific as an internet personality quiz.

Jung's original definition that some people get energy from socializing while others have to expend energy to socialize doesn't hold up to scrutiny. We're social primates and sometimes we like socializing and other times we find it taxing but often it's a little of both.

If you really don't like socializing you may have some degree of social anxiety, and maybe you identify as an introvert. Which is fine of course - most people will understand what you mean.

But I think it's important to remember that we're not talking about a real thing that actually exists in our genes or brains. It's just a vague description of your attitude to socializing.