In message , at 19:01:30 on Wed, 4 Sep 2019,
tim... remarked:

Given that some people here seem to think it's surprising to call
buses buses and coaches coaches it seemed possible. A lot of people
seem to want to call coach stations bus stations as well.

Don't know about elsewhere

but Barton Busses in Nottingham(shire) traditionally ran a fleet of
what I would call coaches on their the single decker routes

Having used them myself, they are just single-decker buses.

made getting on and off a full bus rather slow

Ditto bendy-buses with the centre doors sealed off (for whatever
reason).
--
Roland Perry