Base Difficulty

Base difficulty: Level 19 edit

Level distribution for noun (human): 5: 9 19: 1 310: 45 330: 2 340: 1 370: 1 390: 1 400: 2 405: 1 1000: 4 1010: 1 1020: 3 1030: 2 1040: 5 1050: 1 1060: 8 1070: 8 1120: 7 1130: 5 1399: 66

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: 924 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200
cefr A1 (1 of 6) 800

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 4758 80% 3638 2
20th_books 70.33 1588 80% 1260 2
wiki_math 102.27 1257 80% 1091 2
wiki_geography 185.74 649 80% 695 downrated 2
wiki_biology 0.00 — — — 0
wiki_modern_life 86.02 2011 80% 1690 2
wiki_arts 144.27 1245 80% 956 2
wiki_society 448.90 246 80% 246 2
wiki_linguistics 285.31 458 80% 458 2
wiki_physical_science 0.00 — — — 0
wiki_history 246.32 782 80% 531 2
early_modern_science 75.60 1984 80% 1471 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 295.72 635 80% 429 3
eu_parliament_debates 28.71 2584 80% 3230 downrated 1
openstax_science 109.32 1819 80% 1237 2
openstax_society 415.65 304 80% 298 2
wpa_life_histories 32.21 3525 80% 2258 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.