trend
A2CEFR level
5/100Rarity: common
TechnicalRegister
The direction of change in a measurement over time, which is often more informative than a single value.
It's the downward trend in her blood pressure that worries me, not the single reading.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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