A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Mountain bike (MTB) can mean almost any kind of off-road bicycle. Wide knobby tires, flat handlebars, maybe shocks, probably a sturdy frame...
Bikes designed for road use only. Could be any road-only bike, but typically means bikes optimized for speed / racing / club rides with drop handlebars, narrow tires and a crouched-forward rider posit…
The rubber attached to the rim of your wheel. Flats, changing tires, selecting tires, etc.
Disc/rim/drum/coaster brakes; braking technique, maintaining brakes, anything else about stopping a bike.
Tools, parts, techniques, and procedures to keep your bike in working order. MAINTENANCE is not the same as REPAIR, a separate tag. Maintenance is what one does on a regular basis. Repair is what one …
The big round things your bike rolls on. Rims, spokes, hubs, etc. If it's all about the rubber part, "tire" tag is better.
Shimano brand bicycle components. (No need to use if Shimano is an incidental part of the question.)
Repairing, maintaining, or replacing the chain on your bike that connects the front of the drivetrain (cranks, chainrings) to the back (cogs, cassette).
Bicycle frame construction, selection, maintenance, and repair.
broken. REPAIR is not the same as MAINTENANCE, a separate tag. Repair is what one does only when something is broken. Maintenance is what one does on a regular ba…
Mechanism to move the chain from one sprocket to another.
the combination of components that convert motion from the rider's leg movements into rotational motion to drive the chain and propel the bike. The crankset includes one or more chainr…
Riding safely, safety equipment, and safe places to ride.
The part of your bike that contains the axis the cranks arms spin 'round. (The crank arms are where the pedals attach.)
Brakes with a disc near the hub and calipers that grip that disc.
Riding to and from work. Other cycling primarily for transportation. Carrying stuff. Picking a bike. Related issues.
A cluster of sprockets, commonly 5 to 11 of them, attached to a freehub on the rear wheel.
Questions looking for help with brand or model identification of a cycle. You MUST include a photograph of the complete bike. The serial number on its own is not enough to identify a bike.
Questions about shifting between gears or the shifters themselves.
Usually means the front fork, where the front wheel sits. Can also mean the rear fork, a part of the frame.
Bicycle components without which it's not a working bike: wheels, brakes, saddle/seat, bottom bracket, derailleur, stem, handlebars, bolts, etc. Also tag with specific part.
The cogs (gears) at the front of your drive chain, connected to the cranks.
Questions referring to the derailluer responsible for moving the chain along the cassette
Concerning the parts and mechanism of bike gearing, both internal and external. Multi-speed, single-speed, fixed and freewheel.
The things you push your feet against to make the bike go. Pedaling technique, and other stuff related to pedals. Clips and clipless pedals.
How to get the right sized bicycle for you or adjust your bicycle to fit you better.
the part of the bike where the rider holds onto for grip and steering of the bike.
Touring usually means very long multi-day (or multi-week) rides carrying a lot of gear (camping, cooking, clothes, etc) on the bike. Can also apply to unloaded/creditcard touring involving using hotel…
Hydraulic disc brakes use fluid (either mineral oil or automotive brake fluid) to transmit brake pressure from the handlebar levers to the disc brakes on the wheel.
The specialized system(s) of a bicycle that insulate a rider from rough terrain.
If your question fits this tag, it's probably considered Off Topic for bicycles.SE. Questions that ask to compare two brands or pricings will end up being closed. Try and word your question as generic…