Perhaps it's a very specific answer, but I write in simple English, since many of my readers are not native speakers. I stick to words people are likely to understand.

Our local immigration office recently picked a newer, better name, but since no one uses it, I'm sticking to the old one.

Another one is expat vs immigrant. I favor immigrant, but I can't rename expat insurance to immigrant insurance. The latter does not exist.

I use the gender-neutral "they" across the website, but sometimes "he" would be a lot clearer when replacing a singular noun like "the landlord".

Sometimes the common word is the right word to use. When in doubt, I refer to Google Trends.