Isn't it even harder to re-define names in a company? There might be 3 people involved in re-definition, but it affects 15 people.

How are we going to notify those 15? Do we even know who those 15 are? Are we going to create a weekly redefinition newsletter?

I think in most cases new meaning deserves a new name. Everything else is just hacks.

How hard is it to change a name is a actually a really good metric for a company. If a simple rename takes several days, multiple approvals, rounds of QA, and a scheduled release next quarter, then you probably need those hacks.