mainland
continental part of any polity or the main island of an island nation or territory
continental United States
umbrella term for parts of the United States located on the main landmass of North America (i.e., 49 states excluding Hawaii, plus the District of Columbia)
Mainland
main island of the Shetland Islands, Scotland, UK
mainland Norway
part of Norway in continental Europe
mainland China
geopolitical area under the jurisdiction of the People's Republic of China, excluding Special Administrative Regions
Mainland
main island of the Orkney Islands, Scotland, UK
mainland Australia
main landmass of the Australian continent
peninsular Spain
part of Spain in Iberia
contiguous United States
the 48 states of the United States (all but Alaska and Hawaii) and the District of Columbia
continental Europe
continent of Europe, excluding European islands
Continental Portugal
mainland Portugal