disposable income
the rewards from direct and indirect contribution to the production process plus government transfers minus (direct) income taxes
inflation
a sustained increase in the general level of prices over a period of time
unemployment
the situation where individuals who are capable and willing to work cannot find a job.
underemployment
total number of people in an economy who are unwillingly working in low-skill and low-paying jobs or only part-time because they cannot get full-time jobs that use their skills.
real rate of interest equation
nominal interest rate - rate of inflation