Base difficulty: Level 275 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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
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 |
6.33 | 8759 | 100% | 8759 | 1 |
20th_books |
9.04 | 6699 | 100% | 6699 | 1 |
wiki_math |
158.22 | 859 | 100% | 859 | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
270.60 | 610 | 100% | 487 | 2 |
wiki_modern_life |
166.60 | 1152 | 100% | 869 | 2 |
wiki_arts |
35.68 | 3747 | 100% | 3747 | 1 |
wiki_society |
417.90 | 344 | 100% | 281 | 2 |
wiki_linguistics |
48.91 | 2429 | 100% | 2429 | 1 |
wiki_physical_science |
183.49 | 787 | 100% | 787 | 1 |
wiki_history |
65.78 | 2095 | 100% | 2095 | 1 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
116.98 | 1118 | 100% | 1118 | 1 |
eu_parliament_debates |
54.08 | 1947 | 100% | 1947 | 1 |
openstax_science |
325.83 | 604 | 100% | 427 | 2 |
openstax_society |
772.58 | 211 | 100% | 154 | 2 |
wpa_life_histories |
0.00 | — | — | — | 0 |
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.