### device | resistor | variable resistor:

Dimmer
* also increase the service life of incandescent lamps significantly.
* are high rise sensor dimmers
  - switchs
  - the primary means used to control the lights' brightness
* can dramatically increase the life expectancy of light bulbs and save electricity.
* controls one zone, or area, of light in a RadioRA system.
* reduce the wattage and output of incandescent and fluorescent lamps.
* switches and highlow switches are easy ways to save on energy costs.
* variable resistor
* vary the voltage delivered to each light, making it brighter, darker, on, or off.

Rib
* Most ribs contain marrow.
* Most ribs protect internal organs
* Some ribs absorb radiation.
* Some ribs are part of aeroplanes
  - airplanes
* are strong and flexible but can be broken by a blow with the hand
  - the metal pieces that help form the special airfoil shape of the wing
* includes sections.
* is support
* protect hearts

### device | rib:

Screw thread
* Most screw thread is part of screws.
* are measured either in millimeters or in numbers.

### device:

Router
* also divide networks logically instead of physically.
* are a widely accepted method for interconnecting LANs
  - basically systems, which connect two networks together
  - complex devices that can have a wide variety of possible configurations
  - computers that move information across a network
* are devices that connect different networks using the same protocols
  - networks to other networks
  - help networks connect efficiently
  - route Internet traffic to and from the Internet or other networks
  - which connect separate physical networks into a single internetwork
  - electrical devices
  - key devices used to direct the information that the Internet transmits
* are located in houses
  - libraries
  - machines that direct data traveling through cyberspace to a final destination
  - networking hardware
  - power tools
  - responsible for forwarding packets between different networks or subnets
  - skilled workers
* are specialized computers dedicated to receiving and forwarding network packets
  - that link together the Internet's smaller regional networks
* are the glue that holds the Internet together
  - most important traffic-regulating devices on large networks
* basically act as gateways to the Internet or gateways to external networks.
* often serve as an internet backbone, interconnecting all networks in the enterprise.
* perform the task of moving traffic between networks.
* use routing protocols to exchange routing tables and to share routing information.

Rudder
* Most rudders have a large washer under the head.
* Some rudders have a hinge that slants forward.
* are airfoils
  - always a weak point in a boat
* are located in boats
* are part of airplanes
  - sailboats
  - ships
  - vessels
* help solos stay on course and aid somewhat in turning, but they also cut into hull speed.

Saddle
* Most saddles have distinct edges
* are body parts
  - cuts
* are located in cowboys
  - race tracks
  - stables
  - natural things
* are part of backs
  - shoes
  - seats
* are used for donkeys
  - horses
  - mules
  - rides
  - riding
* can be solid wood , or hand made from leather.
  - thin edges
* includes sections
  - stirrups
* support weight.