Most people know that words are just labels and when it comes to communication. We shouldn’t insist on using the right words, while the context is self-evident to everybody. The problem arises when people swap similar words with entirely different meaning, like in the following examples.
astronomy – astrology,
physicist – physician,
meteorology – metrology,
scientometry – Scientology,
psychologist – psychopath
This can lead to confusion and chain of misunderstandings.