Base difficulty: Level 160 edit
Level distribution for noun (natural_object): 135: 2 160: 1 170: 2 195: 1 219: 1 290: 1 1399: 1
No difficulty overrides set. The base difficulty level will be used for all languages.
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
cambridge_yle |
Starters (1 of 3) | 325 |
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 |
19.05 | 3632 | 44% | 4187 downrated | 2 |
20th_books |
10.47 | 4576 | 44% | 6393 downrated | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
118.02 | 809 | 44% | 1165 downrated | 2 |
wiki_modern_life |
44.75 | 2756 | 44% | 3259 downrated | 2 |
wiki_arts |
18.79 | 3216 | 44% | 7236 downrated | 1 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
107.43 | 861 | 44% | 1345 downrated | 2 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
108.34 | 819 | 44% | 1064 downrated | 2 |
religious_translated |
11.61 | 3308 | 44% | 7443 downrated | 1 |
cooking |
186.80 | 578 | 44% | 714 downrated | 2 |
legal_scotus |
2.34 | 9708 | 44% | 20000 capped | 1 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
72.96 | 1196 | 44% | 1881 downrated | 2 |
openstax_society |
0.00 | — | — | — | 0 |
wpa_life_histories |
12.85 | 4151 | 44% | 5632 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.