When I was a kid and my little brother was learning to talk I could understand him when my parents couldn’t, and they’d often ask me to tell them what he was saying. I was an interpreter! I now realize he was using intonation patterns instead of words to communicate.
When I was five years old we moved from the East Coast to California and I was amazed at how people out west used different words for many things.
I decided I wanted to learn every language in the world. I had no idea how many languages there are.
I studied Latin and German in High School and French in College (That’s another story.) But the only language I became fluent in besides English is American Sign Language.