paid media
B1CEFR level
25/100Rarity: fairly common
TechnicalRegister
Marketing exposure purchased through channels such as search ads, display and sponsored posts.
We split the budget evenly between paid media and content, then shifted towards whatever converted.
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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