It's quite normal for words which might seem to have the same meaning in the common vernacular to have nuanced meanings within a domain. This doesn't just appl

It's quite normal for words which might seem to have the same meaning in the common vernacular to have nuanced meanings within a domain. This doesn't just apply to science and engineering - consider law, medicine, religion, food service...really just about anything you can think of. And it's not just an English language phenomenon, either: two words that mean the same (exact, identical, similar) thing really implies there's a difference between the words. And yeah, as a test engineer, metrology can be confusing, but that's because it's necessarily complex, not because of silly choices.