Bike Strcuture and parts
Road bike components is contained Frame, Handlebar, Wheelsets, Group sets. When you want to buy a road bike you may consider thoes components.
And here is the name of road bike parts
Frame: Seatpost, Head Tube, Fork, Top Tube, Down tube, Seat tube, Seat stay, Chainstay
Handlebar: Gear and brake levers, Bartape, Stem
Wheelsets: Tires, Hub, Nipple, Rim, Spoke
Group sets: Crankset, Front and rear derailleur, Shifters (which have integrated brake levers), Brakes, Rear cassette, Chain