Base difficulty: Level 1399 edit
Level distribution for noun (social_institution): 299: 40 315: 1 360: 1 405: 1 1020: 2 1030: 7 1040: 1 1060: 11 1070: 7 1120: 9 1399: 25
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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 |
8.25 | 3567 | 36% | 9809 downrated | 1 |
20th_books |
5.43 | 4776 | 36% | 13134 downrated | 1 |
wiki_math |
77.47 | 641 | 36% | 1763 downrated | 1 |
wiki_geography |
35.41 | 1440 | 36% | 3960 downrated | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
36.30 | 2293 | 36% | 3991 downrated | 2 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
57.04 | 1372 | 36% | 2463 downrated | 2 |
wiki_linguistics |
8.54 | 4099 | 36% | 9000 capped | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
26.00 | 1916 | 36% | 5269 downrated | 1 |
early_modern_science |
16.70 | 2410 | 36% | 6628 downrated | 1 |
religious_translated |
18.21 | 1943 | 36% | 5343 downrated | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
68.72 | 1055 | 36% | 1772 downrated | 3 |
eu_parliament_debates |
48.42 | 1222 | 36% | 2282 downrated | 2 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
60.82 | 1420 | 36% | 2277 downrated | 2 |
wpa_life_histories |
63.22 | 672 | 36% | 1603 downrated | 2 |
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.