In US English, a walkway is a composite or umbrella term for all engineered surfaces or structures which support the use of trails. These include sidewalk

Sidewalk

A sidewalk, or pavement, footpath, footway, and sometimes platform, is a path along the side of a road. A sidewalk may accommodate moderate changes in grade and is normally separated from the vehicular section by a curb...

s, footbridges, stile

Stile

A stile is a structure which provides people a passage through or over a fence or boundary via steps, ladders, or narrow gaps. Stiles are often built in rural areas or along footpaths to allow access to an adjacent field or area separated by a fence, wall or hedge...

s, stairs

Stairway

Stairway, staircase, stairwell, flight of stairs, or simply stairs are names for a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps...

, ramp

Inclined plane

The inclined plane is one of the original six simple machines; as the name suggests, it is a flat surface whose endpoints are at different heights. By moving an object up an inclined plane rather than completely vertical, the amount of force required is reduced, at the expense of increasing the...

s, paseos or tunnel

Tunnel

A tunnel is an underground passageway, completely enclosed except for openings for egress, commonly at each end.A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers...

s. Walkways can also be used by passengers to board or disembark from an aircraft

Aircraft

An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...

 to the terminal

Airport terminal

An airport terminal is a building at an airport where passengers transfer between ground transportation and the facilities that allow them to board and disembark from aircraft....

 building.

In UK English, walkway more specifically means a covered or raised passage in a building or a wide walk in a park or garden.

A walkway can be at ground level, elevated, such as a boardwalk, or floating. It can be a simple paved path or something more complex to cross a road or a body of water. An open pedestrian overpass

Footbridge

A footbridge or pedestrian bridge is a bridge designed for pedestrians and in some cases cyclists, animal traffic and horse riders, rather than vehicular traffic. Footbridges complement the landscape and can be used decoratively to visually link two distinct areas or to signal a transaction...

 or a special tunnel are also examples of walkways.

See also

• Floating dock
  Floating dock
  A floating dock is a platform or ramp supported by pontoons. It is usually joined to the shore with a ramp that rests upon the dock on rollers, to adjust for the vertical movement of the dock...
  
  
• Footpath
  Footpath
  A Footpath is a thoroughfare intended for by pedestrians but not by motorized vehicles. The term is often for paths within an urban area that offer shorter quieter routes for pedestrians, they may also provide access to the surrounding countryside or parks...
  
  
• Oceanway
  Gold Coast Oceanway
  The Gold Coast Oceanway is a foreshoreway along beaches in Gold Coast, Queensland. The Gold Coast Oceanway is a shared use pedestrian and cyclist pathway on the Gold Coast, connecting the Point Danger lighthouse on the New South Wales and Queensland border to the Gold Coast Seaway...
  
  
• Processional walkway
  Processional walkway
  A processional walkway is a ceremonial walkway in use since ancient times. Common functions of a processional walkway are for religious, governmental or celebratory purposes....
  
  
• Promenade
• Sidewalk
  Sidewalk
  A sidewalk, or pavement, footpath, footway, and sometimes platform, is a path along the side of a road. A sidewalk may accommodate moderate changes in grade and is normally separated from the vehicular section by a curb...
  
  
• Skyway
  Skyway
  In an urban setting, a skyway, catwalk, sky bridge, or skywalk is a type of pedway consisting of an enclosed or covered bridge between two buildings. This protects pedestrians from the weather. These skyways are usually owned by businesses, and are therefore not public spaces...
  
  
• Moving sidewalk