What is the difference between startup and a normal business ?

[Dr.Bitcoin_Strange]

Well, just as the name already suggests, normal business usually and already has enough capital that is sufficient to carry on in its business, while start-ups may also have some capitals (but not enough capital) to finance their products, but still they have some things to be settled so as to enable them to bring their products to sell, or they may lack enough capital to render their service efficiently. In other words, a start-up may not yet have a well developed business-work-frame, just like a normal business. 

[Mr. Allcrypto]

Usually startups has a tech aspect, but they can still operate in traditional fields ...
Take for example uber, it's like a taxi service but rely on an app

Yes, startup always requires technology but the truth is all business, both startups and normal businesses has risk, so before  you think about investing your business plan or idea, you should be able to manage the risk that are involved too, so you don't go on bankruptcy or have your business fall off the market.