Base difficulty: Level 304 edit
Level distribution for conjunction (conjunction_other): 6: 4 9: 4 10: 1 11: 2 304: 4 1399: 1
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B1 (3 of 6) | 4200 |
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 |
89.65 | 1048 | 100% | 1048 | 1 |
20th_books |
89.81 | 1079 | 100% | 1079 | 1 |
wiki_math |
58.73 | 1824 | 100% | 1824 | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
37.25 | 3473 | 100% | 3473 | 1 |
wiki_modern_life |
60.50 | 2428 | 100% | 2428 | 1 |
wiki_arts |
28.47 | 4555 | 100% | 4555 | 1 |
wiki_society |
61.37 | 2277 | 100% | 2277 | 1 |
wiki_linguistics |
82.75 | 1550 | 100% | 1550 | 1 |
wiki_physical_science |
49.47 | 2741 | 100% | 2741 | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
124.48 | 926 | 100% | 926 | 1 |
religious_translated |
168.24 | 638 | 100% | 638 | 1 |
cooking |
111.53 | 1066 | 100% | 1066 | 1 |
legal_scotus |
296.81 | 421 | 100% | 421 | 1 |
eu_parliament_debates |
74.22 | 1523 | 100% | 1523 | 1 |
openstax_science |
40.70 | 3024 | 100% | 3024 | 1 |
openstax_society |
54.93 | 2442 | 100% | 2442 | 1 |
wpa_life_histories |
79.16 | 1202 | 100% | 1202 | 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.