Base difficulty: Level 195 edit
Level distribution for noun (natural_object): 135: 2 160: 1 170: 2 195: 1 219: 1 290: 1 1399: 1
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cefr |
B2 (4 of 6) | 6900 |
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 |
44.76 | 1390 | 49% | 1991 downrated | 2 |
20th_books |
62.69 | 974 | 49% | 1516 downrated | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
33.77 | 3316 | 49% | 3752 downrated | 2 |
wiki_modern_life |
56.16 | 1987 | 49% | 2606 downrated | 2 |
wiki_arts |
13.18 | 4826 | 49% | 9797 downrated | 1 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
32.17 | 2407 | 49% | 3229 downrated | 2 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
93.81 | 909 | 49% | 1192 downrated | 2 |
legal_scotus |
0.00 | — | — | — | 0 |
eu_parliament_debates |
10.15 | 3694 | 49% | 7499 downrated | 1 |
openstax_science |
18.02 | 3292 | 49% | 6683 downrated | 1 |
openstax_society |
0.00 | — | — | — | 0 |
wpa_life_histories |
63.47 | 981 | 49% | 1536 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.