Sometimes, technical terms might seem overkill. But the goal of language is to allow us to communicate.

In the progress of rewriting agg (doing it right this time) I witnessed how your word pool can also influence your thoughts. Once I've learned a taxonomy of test doubles (objects used to test other objects), my mental models of the tests became more concise and I could refactor the test suites to have a better structure and cleaner code.

To share my enlightenment, you can find the taxonomy on http://xunitpatterns.com/Mocks,%20Fakes,%20Stubs%20and%20Dummies.html.