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 |
cambridge_yle |
Movers (2 of 3) | 750 |
cefr |
A1 (1 of 6) | 800 |
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 |
131.07 | 856 | 100% | 705 | 2 |
20th_books |
134.41 | 895 | 100% | 702 | 2 |
wiki_math |
49.66 | 2030 | 100% | 2030 | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
35.00 | 3616 | 100% | 3616 | 1 |
wiki_modern_life |
139.76 | 1015 | 100% | 1015 | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
84.34 | 1736 | 100% | 1736 | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
77.46 | 1500 | 100% | 1500 | 1 |
religious_translated |
54.59 | 1812 | 100% | 1812 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
0.00 | — | — | — | 0 |
eu_parliament_debates |
37.93 | 2498 | 100% | 2498 | 1 |
openstax_science |
36.99 | 3254 | 100% | 3254 | 1 |
openstax_society |
0.00 | — | — | — | 0 |
wpa_life_histories |
86.27 | 1253 | 100% | 1080 | 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.