| A | B |
| construct | to form by putting together parts |
| destruction | the act of destroying; a state of damage |
| infrastructure | underlying framework of a system |
| obstruction | an obstacle or something put up against something else |
| reconstruction | to act of putting back together |
| contraction | act of drawing together or shrinking |
| extraction | process of withdrawing, pulling out |
| retract | to draw or pull back |
| convince | to persuade by argument or evidence |
| invincible | unbeatable; impossible to overcome |
| commotion | the scene of noisy confusion or activity |
| immobile | motionless; unable to move |
| mobility | relating to the quality of being able to move |
| promotion | an advancement in rank or position |
| removable | able to be taken or carried away |
| abbreviate | to shorten |
| brevity | quality of being brief; shortness in time |
| accessible | easily entered, approached, or obtained |
| proceed | to go forward, especially after stopping |
| secede | to formally break away from |