Base Difficulty

Base difficulty: Level 295 edit

Level distribution for noun (communication_information): 5: 1 19: 6 295: 28 370: 1 400: 36 420: 1 440: 32 460: 1 470: 2 1000: 8 1040: 1 1060: 2 1070: 10 1080: 1 1110: 16 1120: 2 1207: 1 1220: 1 1399: 83

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: 919 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 13.19 4548 80% 5685 downrated 1
20th_books 5.72 7836 80% 9795 downrated 1
wiki_math 561.74 308 80% 247 2
wiki_geography 0.00 — — — 0
wiki_biology 54.84 3579 80% 2287 2
wiki_modern_life 468.71 296 80% 236 2
wiki_arts 42.55 2600 80% 3250 downrated 1
wiki_society 111.91 1357 80% 1250 2
wiki_linguistics 72.66 2427 80% 1608 2
wiki_physical_science 366.07 448 80% 375 2
wiki_history 29.73 3568 80% 4460 downrated 1
early_modern_science 85.96 1434 80% 1296 2
religious_translated 13.47 4567 80% 5709 downrated 1
cooking 0.00 — — — 0
legal_scotus 592.91 163 80% 179 downrated 2
eu_parliament_debates 169.99 669 80% 666 2
openstax_science 232.74 799 80% 608 2
openstax_society 44.64 3396 80% 2562 2
wpa_life_histories 6.99 7165 80% 8956 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.