Base difficulty: Level 1399 edit
Level distribution for noun (collection_things): 278: 1 405: 1 450: 1 460: 9 1000: 5 1010: 1 1030: 1 1050: 3 1060: 1 1078: 2 1080: 1 1120: 1 1205: 3 1211: 1 1214: 1 1220: 3 1223: 2 1399: 33
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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 |
27.95 | 2996 | 100% | 2996 | 1 |
20th_books |
27.34 | 2982 | 100% | 2982 | 1 |
wiki_math |
1014.61 | 121 | 100% | 121 | 1 |
wiki_geography |
206.29 | 613 | 100% | 613 | 1 |
wiki_biology |
132.51 | 1062 | 100% | 1062 | 1 |
wiki_modern_life |
295.64 | 379 | 100% | 379 | 1 |
wiki_arts |
870.93 | 106 | 100% | 106 | 1 |
wiki_society |
217.17 | 574 | 100% | 574 | 1 |
wiki_linguistics |
270.14 | 493 | 100% | 493 | 1 |
wiki_physical_science |
223.63 | 632 | 100% | 632 | 1 |
wiki_history |
450.96 | 218 | 100% | 218 | 1 |
early_modern_science |
210.63 | 512 | 100% | 512 | 1 |
religious_translated |
39.26 | 2379 | 100% | 2379 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
76.07 | 1689 | 100% | 1689 | 1 |
eu_parliament_debates |
78.78 | 1455 | 100% | 1455 | 1 |
openstax_science |
313.58 | 408 | 100% | 408 | 1 |
openstax_society |
143.72 | 984 | 100% | 984 | 1 |
wpa_life_histories |
20.13 | 3601 | 100% | 3601 | 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.