I could re-tag the question but for some of these tags a tag wiki and/or excerpt has already been written and it might be a bit rude to accidentally dump it by leaving the tag as an orphan and adding a new blank tag in its place.
If a diamond could either rename the singular to the plural or leave the singular as a synonym, whichever they think is the best solution:
castle -> castles camper -> campers mountain -> mountains
- border -> borders
- passport -> passports
- exchange-rate -> exchange-rates
- road-trip -> road-trips
- bus -> buses
- travel-mate -> travel-mates
- visa -> visas
- simcard -> simcards
- train -> trains
- eclipse -> eclipses
Wow we really have heaps of these left. I'm surprised we didn't notice.
Makes me wonder if it really is worth it. It does seem to come up sooner or later on most SE sites though that it's the more professional way to do it. Anyway here's a bunch more for the list...