Linguistic help please
I do some tourist guiding as a volunteer and Americans often ask me about some of the trees we pass. Can you put me straight on the US term for London Planes? Do you call them by that name or are they Sycamores to you? The other tree I need help on is what I call a Sycamore i.e. Acer platanoides. What would you call it? And, not tree related, but can you help on ground floor (i.e. the floor you go in on) and first floor (i.e. up one flight of stairs)? Would you call that the first floor and the second floor? Thanks, Flora.