Base Difficulty

Base difficulty: Level 175 edit

Level distribution for verb (possession): 3: 3 7: 2 10: 1 20: 3 175: 14 254: 1 309: 1 314: 1 360: 1 406: 1 415: 3 455: 1 475: 3 1070: 1 1205: 1 1399: 28

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: 513 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 239.07 642 100% 397 3
20th_books 157.33 920 100% 583 3
wiki_math 66.98 2190 100% 1341 2
wiki_geography 323.75 945 100% 426 4
wiki_biology 140.35 2420 100% 958 3
wiki_modern_life 282.96 1444 100% 516 4
wiki_arts 256.04 727 100% 511 3
wiki_society 366.43 821 100% 368 4
wiki_linguistics 105.87 2002 100% 1151 2
wiki_physical_science 101.91 2172 100% 1341 2
wiki_history 661.52 179 100% 152 3
early_modern_science 239.96 929 100% 461 4
religious_translated 622.70 407 100% 172 4
cooking 31.55 2359 100% 2359 1
legal_scotus 444.03 790 100% 284 5
eu_parliament_debates 291.31 937 100% 367 5
openstax_science 258.50 1475 100% 514 4
openstax_society 492.73 679 100% 283 4
wpa_life_histories 227.89 592 100% 434 4

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.