Base Difficulty

Base difficulty: Level 309 edit

Level distribution for noun (group_people): 309: 19 330: 1 405: 2 410: 1 430: 1 1000: 1 1010: 1 1030: 2 1060: 1 1070: 1 1080: 1 1120: 4 1207: 2 1218: 3 1399: 22

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: 1025 (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 0.00 — — — 0
20th_books 44.80 2167 100% 1773 2
wiki_math 0.00 — — — 0
wiki_geography 434.56 385 100% 287 2
wiki_biology 44.77 3004 100% 3004 1
wiki_modern_life 667.18 269 100% 161 2
wiki_arts 109.32 1646 100% 1235 2
wiki_society 93.55 2219 100% 1465 2
wiki_linguistics 29.90 3472 100% 3472 1
wiki_physical_science 60.47 2334 100% 2334 1
wiki_history 150.67 867 100% 867 1
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 23.47 4102 100% 4102 1
eu_parliament_debates 50.01 2811 100% 1645 2
openstax_science 138.72 1336 100% 956 2
openstax_society 82.19 2427 100% 1545 2
wpa_life_histories 160.37 928 100% 606 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.