More people ought to learn about the programming language concept of namespaces. Generalize from that and you realize that every domain of discourse has its own namespace of words that have different meanings from those same words outside the domain.

My favourite is math which has loads of wonderfully generic-sounding terms such as rational, irrational, radical, real, imaginary, complex, group, ring, field, category, set, operator, element, and unit which all have radically different meanings from the everyday senses of those words.