A government bond is a type of debt-based investment, where you loan money to a government in return for an agreed rate of interest. Governments use them to raise funds that can be spent on new projects or infrastructure, and investors can use them to get a set return paid at regular intervals.
Government bond example
Say, for instance, that you invested 10,000 into a 10 year government bond with a 5% Annual interest. Each year, the government would pay you 5% of your 10,000 as interest, and at the maturity date they would give you back your original 10,000.