For most people, when they think of investing, they think of the stock market. It's simple; you buy a small portion - a share - of a company and if the company is successful, the price will go up. You will also receive a share of the profits every year as a dividend. The drawback is that the price can go down as well as up and you need to do a lot of research in order to choose a good company to invest in. Then, you need to keep a close eye on the stock market in order to decide when to sell your stocks or to buy more.
Property is a great investment. Not only does the price go up over time, but you can also rent it out for a monthly income. The downside is simple: it costs a lot of money to buy a property and you may need to save up even just to cover the down payment. Most people are too concerned about paying off their own mortgage to consider buying a property as an investment.