As you stake then you're an investor, you buy crypto and hold it then you're investing but you're not staking. It's confusing for others to understand.
But investment is a general term.
Staking is one of the methods of investing, which is a term that is used universally. If we say investing, we are referring to the expenditure of money in the hope of making a profit or incurring a loss. Staking is a type of investment in and of itself, but it is only one method of investing among many others available in the world of finance. I believe that when people talk about investing, they are referring to holding bitcoins, which they are most likely referring to investing bitcoins, or staking, which I do invest in this coin, which he is referring to staking.
and investment is the activity of saving or placing our money for a certain period of time with the hope that these deposits will generate profits or increase the value of the investment and someone who invests his capital is called an investor.