I'm maintaining a document called Tricksy words with multiple meanings that cause endless confusion and strife

Just in the past year I have wasted several months pulling my hair out due to incorrectly named projects.

It really does turn out naming is important!

I've seen a spreadsheet with NATO abbreviations and terms. It's tens of thousands of entries. And the best ones have tens of definitions.

Care to share some highlights?

I've worked at places where it turned out different parts of the organization had a different idea of what a "user" of the core product was.

The team using Salesforce, the data warehouse team, the application development teams, all with different mental models of what "we added 5,000 users today" actually meant in concrete terms.