### structure | barrier:

Door
* Many door locking devices fail to operate correctly even with a small voltage reduction.
* Use doorstops and door holders to protect baby's fingers
  - protect fingers
* also figure into moving air, as well as machinery
  - have an aesthetic role in creating an impression of what lies beyond
* are also a source of decoration, containing wood fretwork and pounded metal door knockers
  - instruments of power
  - archways
  - bands
  - barriers between inside and outside, danger and safety
* are capable of closes
  - glass
  - opens
  - entrances
  - exits
* are located in apartments
  - buildings
  - buses
  - cars
  - classrooms
  - front doors
  - internet cafes
  - libraries
  - motels
  - offices
  - schools
  - subways
  - theaters
  - often a character-defining feature of the architectural style of a building
  - openings
* are part of doorways
  - everyday life, dividing the inside from the outside
  - passageways
  - rectangular shapeds
  - significant in preventing the spread of fire
  - solids
  - structures
  - subject to wear and tear by people and by weather
* are used for exits
  - limit access
  - separating rooms
* have archs
  - construction
  - continous hinges
  - handles
  - hollow core construction
  - key-code locks and are kept secure at all times
  - knobs and shapes inside of it
  - mechanisms
  - spring mechanisms
* hold every shape and every rank.
  - keyholes
* know how to open, windows know when to close and open.
* lead to rooms
  - single rooms
* provide security.
* still swing easily and windows hold fragments of glass.

### structure | barrier | door:

Car door
* Some car doors are part of ambulances
  - automobiles
  - taxis
* are auto parts
  - part of cars
* opening into the street are one of the leading causes of bicycle accidents.

Closed door
* are good protection from heat and smoke.
* provide protection against heat and smoke.
* save lives and property by limiting the movement of smoke and flames.

Fire door
* are doors.
* help in containing a fire to one area of a building.
* keep fire and smoke from spreading.
* play an important role in hindering the spread of fires.
* prevent the spread of smoke and flame.
* provide fire protection to an opening.

Hinged door
* are located in bedrooms
  - kitchens
  - pantries
* are used for opens
  - privacies

Locked door
* are the sign of fear and prevention.
* protect the computers that access a classified network.

### structure | barrier | door | outside door:

Backdoor
* are access code
* is an outside door

### structure | barrier | door | sliding door:

Barn door
* keep lights intended for one person from spilling over onto another person or area.
* sliding door

Swing door
* are doors.
* can knock a small child down, and folding doors can pinch little fingers.

Dyke
* are maybe more the political, radical queers as opposed to lesbians.
* divide the wetland into ten units.
* provide an important habitat for lichens, mosses, ferns and flowering plants.
+ Keoladeo National Park, Geography: Rajasthan :: World Heritage Sites in Asia :: Biosphere reserves :: National parks in India :: World Heritage Sites in India
  * Dykes divide the wetland into ten units. Each unit has a system of sluice gates to control its water level.