Base Difficulty

Base difficulty: Level 8 edit

Level distribution for adjective (physical_property): 3: 1 8: 2 11: 11 14: 20 17: 9 18: 7 20: 2 27: 3 133: 1 179: 1 249: 1 330: 1 340: 1 355: 38 360: 1 370: 2 379: 1 380: 1 420: 1 1000: 1 1010: 3 1040: 8 1050: 5 1090: 2 1120: 16 1209: 1 1399: 9

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: 368 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
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 780.76 174 100% 154 3
20th_books 762.90 177 100% 157 3
wiki_math 0.00 — — — 0
wiki_geography 92.69 1533 100% 1533 1
wiki_biology 641.87 173 100% 163 2
wiki_modern_life 192.58 951 100% 733 2
wiki_arts 364.73 359 100% 312 2
wiki_society 165.18 1034 100% 821 2
wiki_linguistics 178.42 1193 100% 727 2
wiki_physical_science 119.48 1234 100% 1234 1
wiki_history 473.01 329 100% 247 3
early_modern_science 355.01 319 100% 300 2
religious_translated 270.22 447 100% 399 2
cooking 224.24 603 100% 603 1
legal_scotus 50.80 3078 100% 1968 2
eu_parliament_debates 191.87 626 100% 626 1
openstax_science 125.10 1326 100% 1048 2
openstax_society 470.82 308 100% 260 2
wpa_life_histories 801.07 178 100% 143 3

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.