challenge – n. to test the ability, skill, or strength of (someone or something
quarter – n. a three-month period of the year
unstable – adj. not held in a secure position
stimulus – n. the act of putting money into the economy to help it
liquidity – adj. the state of having things that can be easily changed into money
confidence – n. a feeling or belief that you can do something well or succeed at something
ballistic missile – n. a weapon that is shot through the sky over a great distance and then falls to the ground and explodes