Base Difficulty

Base difficulty: Level 470 edit

Level distribution for verb (directional_movement): 5: 6 23: 4 26: 3 28: 2 120: 1 135: 2 145: 5 210: 1 254: 1 300: 1 330: 2 415: 1 460: 1 470: 9 1040: 1 1050: 2 1120: 1 1399: 18

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: 1971 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 149.64 919 80% 606 3
20th_books 137.90 979 80% 664 3
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 61.77 1795 80% 2244 downrated 1
wiki_modern_life 29.37 3837 80% 4796 downrated 1
wiki_arts 44.14 2516 80% 3145 downrated 1
wiki_society 25.32 4208 80% 5260 downrated 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 78.92 1480 80% 1850 downrated 1
wiki_history 108.69 2007 80% 1260 2
early_modern_science 113.15 1495 80% 959 3
religious_translated 123.80 955 80% 811 2
cooking 25.24 2339 80% 2924 downrated 1
legal_scotus 36.67 2987 80% 2588 2
eu_parliament_debates 12.49 4357 80% 5446 downrated 1
openstax_science 58.18 1872 80% 2340 downrated 1
openstax_society 49.69 3313 80% 2301 2
wpa_life_histories 46.97 2933 80% 1744 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.