Hybrid & Commuter Bikes
Hybrid bikes, as the name suggests, are a cross-over between road bikes or town bikes and mountain bikes.
Hybrid bikes generally have similar gearing to mountain bikes, usually 2-3 gear ranges (front chain rings) and between 7 and 11 gears in each range (the number of sprockets on the rear wheel).
Hybrid bikes also often have front suspension forks to iron out some of the road vibration. The suspension fork combined with a fatter tyre contribute to a more comfortable ride.
In comparison, many commuter bikes, such as flatbar road bikes, don't have suspension and tend to have narrower tyres than hybrid bikes, but generally have similar gear ranges to the hybrids.
Flatbar road bikes are built more for speed, with a rigid fork and narrower tyres, while hybrids are designed for a more comfortable ride with suspension fork and bigger tyres.