Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (abstract_condition): 300: 37 370: 1 390: 1 400: 4 405: 1 420: 1 1020: 1 1030: 2 1050: 4 1060: 6 1070: 16 1080: 2 1120: 4 1130: 2 1399: 55

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: 1687 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cambridge_yle Flyers (3 of 3) 1200
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 2.97 9170 50% 18340 downrated 1
20th_books 5.68 5728 50% 11456 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 57.07 1211 50% 2422 downrated 1
wiki_biology 210.22 575 50% 625 downrated 2
wiki_modern_life 121.42 742 50% 1128 downrated 2
wiki_arts 29.95 2309 50% 4618 downrated 1
wiki_society 99.79 777 50% 1318 downrated 2
wiki_linguistics 71.54 1519 50% 1768 downrated 2
wiki_physical_science 212.38 464 50% 653 downrated 2
wiki_history 23.41 2917 50% 5834 downrated 1
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 34.80 1804 50% 3608 downrated 1
eu_parliament_debates 186.08 327 50% 654 downrated 1
openstax_science 291.77 252 50% 402 downrated 2
openstax_society 207.33 394 50% 618 downrated 2
wpa_life_histories 2.86 8848 50% 17696 downrated 1

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.