No, there are a few different standards.
That's a pretty muddled question, you might as well ask what makes shoes different from other shoes. BMX bikes can be built for different uses, there are race bikes that are light and have brakes, there are vert/trick bikes that don't have brakes and can take a lot of abuse.
Cervalo Cycles makes lightweight road bikes, in two different categories: Classic Road Bikes and Aero Road Bikes. The bikes are tailored to be as comfortable and efficient as possible on the road.
Ideal who owns Fuji, Kestrel, and SE makes Windsor bikes. Ideal also makes bikes for Trek, Specialized, Cannondale, and Motobecane.
WTP and Haro bikes are probably the best there is.
Racing bikes are so different from your conventional bike in many ways. They are made to be a lot lighter than the average bike you see today and are made for speed. Racing bikes are fitted with minimum components the gears can range from 18 gears to 30 gears.
yes haro makes a big range of racing bikes
Friction
Yamaha
Cateye
Britain
how many makes of motor bikes are in the world and and how many motor bikes are made in each make? how many makes of motor bikes are in the world and and how many motor bikes are made in each make? how many makes of motor bikes are in the world and and how many motor bikes are made in each make?
Researching Korean bicycle manufacturers has found that one company called Samchuly is the largest manufacturer of bikes in Korea. The company makes a large variety of bikes such as folding bikes, racing bikes, children's bikes, women's bikes and mountain bikes.