Tertiary sector

thumb|upright=1.5|alt=The Norwich Union, Fire Insurance Company. Assets over 8 million dollars, losses paid over 100 million dollars.|An advertisement for a fire insurance company Norwich Union, showing the amount of [[assets in coverage and paid insurance (1910)]]

thumb|300px|Leaving some change on the restaurant table is one way of giving a gratuity to the restaurant staff.

service sector, as opposed to raw materials & manufacturing

Sale and delivery between a producer and consumer