Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (legal_concept): 460: 1 1060: 1 1120: 6 1130: 47 1399: 48

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 1533 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B2 (4 of 6) 6900

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 22.68 3559 100% 3559 1
20th_books 16.40 4437 100% 4437 1
wiki_math 21.88 3414 100% 3414 1
wiki_geography 46.40 2937 100% 2937 1
wiki_biology 168.32 1390 100% 822 2
wiki_modern_life 97.05 2494 100% 1490 2
wiki_arts 81.17 2908 100% 1664 2
wiki_society 96.36 2562 100% 1439 2
wiki_linguistics 264.80 919 100% 492 2
wiki_physical_science 108.44 2281 100% 1272 2
wiki_history 37.78 3516 100% 3516 1
early_modern_science 71.73 2277 100% 1460 2
religious_translated 19.34 4141 100% 4141 1
cooking 33.80 2248 100% 2248 1
legal_scotus 455.64 356 100% 270 2
eu_parliament_debates 79.10 2203 100% 1216 2
openstax_science 85.56 2648 100% 1448 2
openstax_society 65.25 3177 100% 1815 2
wpa_life_histories 26.77 3594 100% 2481 2

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.