Housecoats are made of pink nylon that generates more electrical energy than Sizewell B.
A Dressing Gown (of Doom) is made from black terry towelling and is what DP wears when he's plodding around like a depressed Jedi.
A robe is what I wear when I'm all elegant and not at all sweating like a pig in summer after getting out of the bath. Unless it's a Dryrobe, in which case it's what you call an oversized anorak worn by rich people in Waitrose to let you know that they like swimming in shit the sea or watching their DH do Parkrun on a Saturday morning in winter (when there's fewer people taking part so he's going to get a higher placing).
A roundabout is something that people get lost on.
An overbout is the little white ones that act as a decorative feature/enrichment activity at a junction where the ultimate aim is for drivers to try to park across it and cause complete gridlock for as long as possible.
A traffic island is the lump of concrete in the middle of the road that gives you a breather before having to judge whether the traffic coming from the other three directions is going to jump a red light and drive over you or into the red light itself (always have the pole between you and oncoming traffic).
A roll is crunchy or soft
A bap is soft and has flour on the top unless it's a batch roll
A bun contains things like currants, glace icing, rock sugar and may have a glace cherry on top
A burger bun has sesame seeds on top
They're all called inedible because they're not gluten free.
Anything that purports to be a bun, roll, bap, brioche or other small bread product and gluten free is called A Fucking Abomination.