Words sometimes don't mean what they look like they should mean. In the US, "how are you?" or "what's up?" mean about the same thing as "nice to see you". It'

Words sometimes don't mean what they look like they should mean. In the US, "how are you?" or "what's up?" mean about the same thing as "nice to see you". It's not really a question, just a greeting. Confusing to learn, but a protocol that works fine once people on both ends understand it.