Honestly, this is one of those questions where most people use the terms interchangeably, and in everyday conversation, they *are* the same thing. You point at the container where you throw your empty coffee cup, and someone will understand you whether you call it a trash can or a waste bin. But if you want to get a little nerdy about it—and I think it's fun to get a little nerdy—there are some subtle differences that come down to language, region, and context.
First, consider the word "can." It suggests something made of metal, right? A traditional cylindrical shape. That's why we say "trash can" for the galvanized metal container you might see on a city sidewalk or in an alley. It feels industrial, outdoor, and a bit rugged. On the other hand, "bin" comes from a word for a box or a container, often rectangular or square. Think of a "waste bin" in an office—it's usually plastic or wire, sits under a desk, and has a more discreet, interior feel.
Region also plays a big role. In the U.S., "trash can" is the go-to term for almost anything. We talk about "taking out the trash can" even if it's a plastic bin on wheels. In the U.K., "waste bin" or just "bin" is much more common. You'll hear "rubbish bin" or "pedal bin" far more than "trash can." Similarly, in professional or eco-conscious settings, "waste bin" sounds more formal and descriptive—like "recycling bin" or "compost bin"—while "trash can" has a broader, more generic vibe.
Functionally, though? Zero difference. Both are receptacles for discarding unwanted material. You put your trash in a trash can. You put your waste in a waste bin. The only real distinction might be where you place them: a trash can is often larger and outdoors, while a waste bin smaller and indoors. But that's a habit, not a rule.
So to answer your question: No, they are not technically different objects. They are the same thing with different names based on where you grew up, what the container is made of, and how formal you want to sound. But if you're in the U.S. and you call it a waste bin, people will know what you mean. And if you're in the U.K. and you call it a trash can, same thing. It's one of those beautiful little quirks of English that makes language messy and human. At the end of the day, both do the same job: they hold your garbage until you deal with it.