Base Difficulty

Base difficulty: Level 415 edit

Level distribution for verb (possession): 3: 3 7: 2 10: 1 20: 3 175: 14 254: 1 309: 1 314: 1 360: 1 406: 1 415: 3 455: 1 475: 3 1070: 1 1205: 1 1399: 28

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: 97 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 18.99 5396 100% 3676 2
20th_books 28.71 3823 100% 2635 2
wiki_math 1283.65 237 100% 105 4
wiki_geography 3096.96 59 100% 29 4
wiki_biology 2792.27 72 100% 35 4
wiki_modern_life 2420.10 78 100% 36 4
wiki_arts 2532.96 77 100% 37 4
wiki_society 2251.48 91 100% 40 4
wiki_linguistics 1978.25 135 100% 60 4
wiki_physical_science 1813.29 118 100% 55 4
wiki_history 1556.80 88 100% 60 4
early_modern_science 128.33 1932 50% 825 4
religious_translated 7.65 4874 50% 9748 downrated 1
cooking 0.00 — — — 0
legal_scotus 889.18 279 100% 138 4
eu_parliament_debates 763.98 321 100% 159 4
openstax_science 1460.21 167 100% 74 4
openstax_society 1408.54 139 100% 82 4
wpa_life_histories 48.85 2621 100% 1628 3

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.