There are three main types of businesses or organizations: public sector, private sector, and voluntary sector. The public sector is owned and run by the government to provide essential services to the public, such as health, education, and infrastructure. It is funded by taxpayer money. The private sector consists of for-profit businesses owned and run by individuals or shareholders, with goals of profit and growth. The voluntary sector includes non-profit organizations like charities that aim to help particular groups through fundraising and donations.