Grade

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

Many climbing routes have grades to calibrate the technical difficulty, and in some cases the risks, of the route to the climber. The first ascensionist can suggest a grade but it will be amended for the 'consensus view' of subsequent ascents.

Excerpt from the Wikipedia article “Grade (climbing)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Stewart Adcock, aka Stewartadcock at en.wikipedia, CC BY-SA 3.0, via Wikimedia Commons.