Consumption: Consumption can be defined as total demand by the
consumers in the economy. if we want to eat an ice cream then we
are consumers and creating a demand.
Investment that is the amount the business and individuals
invest to generate more capacity in the economy. THe higher the
investment the more the economy will grow. Example, John buying a
new tractor for hi farm.
Government expenditure is the demand created by the government
to buy thing in the economy. It is considered as autonomous like
defence spending.
new export, that is exports - imports its a sum total of all
the exports the nation has done subtracted by all the imports they
have made.