market
The Italian word 'mercato' is used to describe a physical place where people go to buy or sell goods, similar to the English word 'market'. For example, it can be used to describe a traditional open-air market in the city center ('mercato all'aperto'), a supermarket ('supermercato'), or the abstract concept of a business market ('mercato del lavoro' for job market).
Let's go to the market to buy some fruit.
This is a simple command sentence in Italian where we see the use of 'mercato' in a context of a shopping plan, specifically for acquiring fruit.
The flea market is open every Sunday.
In this example, 'mercato' is used in the context of a flea market. Note that the Italian word for flea is 'pulci', hence the phrase 'mercato delle pulci'.
The market square is always crowded.
This phrase uses 'mercato' in the sense of a physical location, specifically a market square (piazza del mercato). We can infer the popularity of the place from the fact that it's always crowded.