Famously whether free helium is a molecule or not depends on whether you're talking to a physicist or a chemist. But yeah, people in different countries speak

Famously whether free helium is a molecule or not depends on whether you're talking to a physicist or a chemist. But yeah, people in different countries speak different languages and the same sound, like "no" can mean a negation in English but a possessive in Japanese. And as different fields establish their jargons they often redefine words in different ways. It's just something you have to be aware of.