I found this interesting article from The Guardian. Share in good faith for all MTB fans.
Before your family mountain biking adventure you should be aware that, like any adrenaline sport, mountain biking MTB has spawned its own jargon. Avert your eyes if you’re offended by what can happen when marketeers are let loose on sport.Full sus “Full suspension mountain bike” so front and rear wheels. Every company claims to have the best system. Almost no mountain biker understands the differences between them. Whichever looks coolest is usually the best.Hardtail Front suspension only; often the preserve of the non-wealthy and extremely wealthy. You know how really expensive cars and really cheap cars don’t have power steering? That sort of thing.Granny ring A simultaneously ageist and sexist name given to the smaller front chainring the one that’s easiest to pedal uphill.XC Short for “cross country”. Back in the day not very long ago in the MTB world people only did “XC”. Then marketeers got involved to help develop some healthy in-fighting.Enduro It used to be “XC” versus “DH” downhill. Now we have “enduro”, which is basically rallycar-style “timed stages” racing. Some say this format is the truest reflection of real-world mountain biking. Enduro cynics say it’s for riders who can’t cut it in “XC” or “DH”. Marketeers just say it, over and over again.Switchback A tight turn usually on a steep hillside. Mountain bikers can argue for hours the difference between a “switchback” and a “hairpin”, the difference being absolutely nothing at all.Midstroke Something to do with the feel of rear suspension. Maybe a few engineers understand it. The key thing to remember is if you hear someone usually whinily saying “midstroke” you need to back away.Edits The modern mountain bike “edit” – or short film – must feature far too much slow-motion cinematography, for when mucking about on bikes is no longer about having a top laugh.Whip A jump/stunt where the bike is twisted to one side, as close as possible to perpendicular to the direction of travel. Some gifted riders look amazing doing it Google “Danny Hart look at the whip” and prepare to be amazed, the rest of us end up shimmying the handlebars a bit and buckling our rear wheels.650B It sounds like a chemical, but it’s actually the name for the latest at time of going to press wheel size “standard” in mountain biking. MTBs were all 26 inches in diameter, until some Californians gave us “twenty niners”. Then the MTB industry thought the world needed something in between, and someone called it 650B. I can’t tell you why. Oh wait, yes I can: marketeers.