Base difficulty: Level 275 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 |
50.64 | 2593 | 100% | 1630 | 2 |
20th_books |
28.82 | 4766 | 100% | 2440 | 2 |
wiki_math |
100.47 | 1786 | 100% | 1016 | 2 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
188.70 | 1457 | 100% | 742 | 2 |
wiki_modern_life |
117.87 | 2232 | 100% | 1251 | 2 |
wiki_arts |
36.01 | 3727 | 100% | 3727 | 1 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
551.72 | 465 | 100% | 247 | 2 |
wiki_history |
29.05 | 4407 | 100% | 4407 | 1 |
early_modern_science |
189.08 | 867 | 100% | 600 | 2 |
religious_translated |
34.07 | 2690 | 100% | 2690 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
0.00 | — | — | — | 0 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
430.56 | 569 | 100% | 326 | 2 |
openstax_society |
0.00 | — | — | — | 0 |
wpa_life_histories |
45.26 | 2358 | 100% | 1830 | 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.