Obligatory link to the British Isles Euler diagram: https://upload.wikimedia.org/wikipedia/commons/2/28/British_Isles_Euler_diagram_15.svg\n\nEDIT: the diagram is from this Wikipedia page, which covers geographic, political, historical, linguistic and sporting contexts of the terms involved: https://en.wikipedia.org/wiki/Terminology_of_the_British_Isles