speculate on/in vs invest

I also didn't understand the meaning of this sentence :

Do we Invest, Speculate, or Trade?

youzouWould you please explain the difference between invest in and speculate on/in something.

Investing:
Put money into shares, property etc. with the hope of earning profit.
Speculating:
Investing with the hope of gaining high profits but with an equally greater risk of loss. It is investing with high risks.


Prajwal

Investing is a generic term for giving your money to a company (or person) in the expectation of getting back more money than you put in by receiving a single payment or series of payments.

Speculation implies a higher risk investment.

Trading is the act or buying or selling an investment.

Thanks, UltimatePedant.