A speculator is a person who buys something — land, a house, shares in a company, gold, bitcoin, even concert tickets — not because they want it, but because they think the price will go up. They plan to sell it later for more money than they paid. That is the whole point: they do not want the thing, they want the profit. This is different from an investor, though the line is blurry and people argue about it. An investor is usually thought of as someone who puts money in for a long time and cares about whether the business is really good. A speculator is thought of as someone taking a fast, risky bet on price alone. In practice many people do both, and whether you call someone an investor or a speculator often depends on whether you like what they are doing. The word carries a slightly cold feeling. When a newspaper says 'property speculators have pushed up house prices', it is blaming them. Nobody puts 'speculator' on a business card. But it is not an insult exactly — it is a neutral job description that most people hear as mildly negative, so it is safer to say 'investor' if you mean it kindly. Note also that the verb 'speculate' has a second, very common meaning that has nothing to do with money: to guess about something you do not know ('People speculated about why she left'). 'Speculator' is almost never used for that guessing sense — for that, English has no neat noun, so we just say 'people are speculating'.