a, o, k, l, n, p, r, t, i are letters that make 'national park'
PA, ti, nation, Nation, Park, ar, at, Pa, par, national, on, ark, Ark, park, AL, AR, Io, ion, pa, Al, Ar, At, Na, Ti are words within 'national park'
1 possible definitions for 'national park'
Under this definition, national park is a noun and has the following properties:
Arches National Park, Badlands National Park, Big Bend National Park, Biscayne National Park, Bryce Canyon National Park, Capitol Reef National Park, Carlsbad Caverns National Park, Channel Islands National Park, Crater Lake National Park, Denali National Park, Everglades National Park, Gates of the Arctic National Park, Grand Teton National Park, Great Smoky Mountains National Park, Guadalupe Mountains National Park, Hot Springs National Park, Katmai National Park, Kenai Fjords National Park, Kobuk Valley National Park, Lake Clark National Park, Lassen Volcanic National Park, Mammoth Cave National Park, Mesa Verde National Park, North Cascades National Park, Olympic National Park, Petrified Forest National Park, Platt National Park, Redwood National Park, Rocky Mountain National Park, Sequoia National Park, Shenandoah National Park, Virgin Islands National Park, Voyageurs National Park, Wind Cave National Park, Wrangell-St. Elias National Park, Yosemite National Park, Zion National Park, Serengeti National Park, Acadia National Park, Canyonlands National Park, Grand Canyon National Park, Haleakala National Park, Hawaii Volcanoes National Park, Kings Canyon National Park, Mount Ranier National Park, Theodore Roosevelt Memorial National Park, Yellowstone National Park, Isle Royal National Park. are instances of 'national park'