Base difficulty: Level 221 edit
Level distribution for noun (concept_idea): 19: 2 26: 1 27: 1 221: 28 270: 30 274: 30 275: 28 280: 25 300: 1 360: 1 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 4 1120: 4 1399: 66
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
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 |
66.06 | 1392 | 100% | 1392 | 1 |
20th_books |
49.64 | 1781 | 100% | 1781 | 1 |
wiki_math |
130.50 | 1012 | 100% | 1012 | 1 |
wiki_geography |
130.65 | 1041 | 100% | 1041 | 1 |
wiki_biology |
441.63 | 248 | 100% | 248 | 1 |
wiki_modern_life |
189.57 | 697 | 100% | 697 | 1 |
wiki_arts |
171.79 | 755 | 100% | 755 | 1 |
wiki_society |
376.34 | 287 | 100% | 287 | 1 |
wiki_linguistics |
304.72 | 423 | 100% | 423 | 1 |
wiki_physical_science |
337.86 | 390 | 100% | 390 | 1 |
wiki_history |
286.31 | 394 | 100% | 394 | 1 |
early_modern_science |
194.02 | 555 | 100% | 555 | 1 |
religious_translated |
42.39 | 2229 | 100% | 2229 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
1407.18 | 73 | 100% | 73 | 1 |
eu_parliament_debates |
86.91 | 1333 | 100% | 1333 | 1 |
openstax_science |
248.94 | 555 | 100% | 555 | 1 |
openstax_society |
315.81 | 400 | 100% | 400 | 1 |
wpa_life_histories |
30.92 | 2766 | 100% | 2766 | 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.