Base Difficulty

Base difficulty: Level 415 edit

Level distribution for verb (communication): 10: 2 11: 1 29: 1 119: 2 140: 1 185: 1 196: 1 215: 1 230: 1 295: 2 300: 1 310: 3 329: 1 400: 1 415: 4 455: 2 460: 2 475: 4 480: 52 485: 5 1000: 2 1060: 1 1070: 2 1120: 2 1399: 73

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: 683 (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 19.73 4064 80% 3567 2
20th_books 12.96 4484 80% 5605 downrated 1
wiki_math 362.17 773 80% 352 4
wiki_geography 76.65 1472 80% 1840 downrated 1
wiki_biology 311.16 721 80% 439 4
wiki_modern_life 376.82 892 80% 377 4
wiki_arts 255.58 982 80% 534 4
wiki_society 433.78 630 80% 306 4
wiki_linguistics 201.21 1539 80% 617 4
wiki_physical_science 411.25 843 80% 355 4
wiki_history 193.18 617 80% 652 downrated 2
early_modern_science 22.78 3487 80% 4359 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 453.02 550 80% 286 4
eu_parliament_debates 436.78 383 80% 274 4
openstax_science 654.98 420 80% 202 4
openstax_society 367.40 775 80% 381 4
wpa_life_histories 7.53 6813 80% 8516 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.