Does "ja" mean "yes"?

Excuse me, I'm curious about something. Could you please clarify for me? I've heard the word "ja" being used in some contexts, and I'm wondering if it translates to "yes" in English. Is that correct? Or does it have a different meaning in the language you're referencing? Could you elaborate a bit more on its usage and context, if possible? I'd really appreciate your help with this matter. Thank you!