Base difficulty: Level 162 edit
Level distribution for noun (physical_phenomenon): 135: 3 162: 4 179: 1 219: 1 221: 1 274: 2 275: 2 280: 1 285: 1 290: 2 300: 2 350: 1 380: 1 400: 1 440: 2 1399: 12
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
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 |
56.07 | 1574 | 97% | 1621 downrated | 1 |
20th_books |
43.70 | 1944 | 97% | 2002 downrated | 1 |
wiki_math |
86.34 | 1357 | 97% | 1398 downrated | 1 |
wiki_geography |
51.69 | 2590 | 97% | 2668 downrated | 1 |
wiki_biology |
175.85 | 746 | 97% | 768 downrated | 1 |
wiki_modern_life |
470.65 | 191 | 97% | 197 downrated | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
23.69 | 5130 | 97% | 5284 downrated | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
655.55 | 144 | 97% | 148 downrated | 1 |
wiki_history |
43.12 | 3052 | 97% | 3144 downrated | 1 |
early_modern_science |
590.91 | 164 | 97% | 169 downrated | 1 |
religious_translated |
76.67 | 1311 | 97% | 1350 downrated | 1 |
cooking |
852.23 | 182 | 97% | 187 downrated | 1 |
legal_scotus |
15.33 | 5259 | 97% | 5417 downrated | 1 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
614.12 | 159 | 97% | 164 downrated | 1 |
openstax_society |
20.47 | 5041 | 97% | 5192 downrated | 1 |
wpa_life_histories |
58.09 | 1608 | 97% | 1656 downrated | 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.