Base difficulty: Level 221 edit
Level distribution for noun (concept_idea): 19: 2 26: 1 27: 1 221: 28 270: 30 274: 30 275: 28 280: 25 300: 1 360: 1 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 4 1120: 4 1399: 66
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
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 |
45.76 | 1956 | 100% | 1956 | 1 |
20th_books |
26.92 | 3032 | 100% | 3032 | 1 |
wiki_math |
38.11 | 2458 | 100% | 2458 | 1 |
wiki_geography |
259.16 | 658 | 100% | 503 | 2 |
wiki_biology |
70.72 | 1934 | 100% | 1934 | 1 |
wiki_modern_life |
498.51 | 304 | 100% | 229 | 2 |
wiki_arts |
1572.57 | 74 | 100% | 58 | 2 |
wiki_society |
151.03 | 1217 | 100% | 919 | 2 |
wiki_linguistics |
426.71 | 377 | 100% | 298 | 2 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
417.23 | 281 | 100% | 257 | 2 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
32.71 | 2772 | 100% | 2772 | 1 |
cooking |
153.25 | 806 | 100% | 806 | 1 |
legal_scotus |
8.30 | 7648 | 100% | 7648 | 1 |
eu_parliament_debates |
11.79 | 5155 | 100% | 5155 | 1 |
openstax_science |
21.61 | 4858 | 100% | 4858 | 1 |
openstax_society |
155.01 | 1376 | 100% | 887 | 2 |
wpa_life_histories |
55.35 | 1965 | 100% | 1571 | 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.