| A | B |
| anticipation | realization in advance of an event; expectation; foresight |
| fluctuate | to change or vary irregularly |
| headlong | plunging with the head foremost; headfirst; reckless |
| imminent | likely to happen immediately, usually said of a threat, evil, etc.; impending |
| velocity | the rate of motion of a moving object; swiftness; speed |
| lever | a bar or handle used to work a machine or other device |
| merge | to blend together; to cause to be absorbed so as to lose identity |
| scaffolding | a raised platform or system of platforms |
| thud | a dull sound, as from a heavy blow or fall |
| laboratory | a place where investigations or experiments, usually scientific in nature, are carried out |