Base difficulty: Level 135 edit
Level distribution for noun (celestial_object): 10: 1 135: 6 219: 2 1050: 3 1055: 88 1399: 1
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cambridge_yle |
Starters (1 of 3) | 325 |
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 |
256.31 | 424 | 100% | 386 | 3 |
20th_books |
224.83 | 472 | 100% | 472 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
57.47 | 2426 | 100% | 2426 | 1 |
wiki_biology |
80.58 | 1727 | 100% | 1727 | 1 |
wiki_modern_life |
60.28 | 2433 | 100% | 2433 | 1 |
wiki_arts |
45.82 | 2988 | 100% | 2988 | 1 |
wiki_society |
97.42 | 1455 | 100% | 1455 | 1 |
wiki_linguistics |
30.96 | 3402 | 100% | 3402 | 1 |
wiki_physical_science |
95.95 | 1525 | 100% | 1525 | 1 |
wiki_history |
39.34 | 3389 | 100% | 3389 | 1 |
early_modern_science |
927.51 | 123 | 100% | 110 | 3 |
religious_translated |
429.87 | 281 | 100% | 265 | 2 |
cooking |
37.18 | 2145 | 100% | 2145 | 1 |
legal_scotus |
0.00 | — | — | — | 0 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
51.50 | 2510 | 100% | 2510 | 1 |
openstax_society |
38.41 | 3189 | 100% | 3189 | 1 |
wpa_life_histories |
131.09 | 778 | 100% | 778 | 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.