Base difficulty: Level 278 edit
Level distribution for noun (animal_grouping_term): 170: 2 278: 3 1399: 5
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
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 |
31.65 | 2696 | 100% | 2696 | 1 |
20th_books |
47.75 | 1844 | 100% | 1844 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
60.81 | 2311 | 100% | 2311 | 1 |
wiki_biology |
226.95 | 568 | 100% | 568 | 1 |
wiki_modern_life |
56.89 | 2570 | 100% | 2570 | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
32.54 | 4125 | 100% | 4125 | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
61.51 | 1848 | 100% | 1848 | 1 |
religious_translated |
81.30 | 1268 | 100% | 1268 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
6.68 | 8556 | 100% | 8556 | 1 |
eu_parliament_debates |
20.40 | 3706 | 100% | 3706 | 1 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
49.60 | 2630 | 100% | 2630 | 1 |
wpa_life_histories |
610.83 | 194 | 100% | 194 | 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.