Base difficulty: Level 210 edit
Level distribution for noun (vehicle): 2: 8 26: 3 210: 28 278: 1 1040: 8 1218: 1 1221: 2 1399: 4
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
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 |
6.33 | 8861 | 100% | 8861 | 1 |
20th_books |
31.55 | 2641 | 100% | 2641 | 1 |
wiki_math |
57.74 | 1852 | 100% | 1852 | 1 |
wiki_geography |
33.03 | 4061 | 100% | 4061 | 1 |
wiki_biology |
30.67 | 3989 | 100% | 3989 | 1 |
wiki_modern_life |
45.94 | 3151 | 100% | 3151 | 1 |
wiki_arts |
130.50 | 1040 | 100% | 1040 | 1 |
wiki_society |
32.19 | 4166 | 100% | 4166 | 1 |
wiki_linguistics |
43.53 | 2687 | 100% | 2687 | 1 |
wiki_physical_science |
53.21 | 2600 | 100% | 2600 | 1 |
wiki_history |
99.18 | 1335 | 100% | 1335 | 1 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
10.93 | 6582 | 100% | 6582 | 1 |
eu_parliament_debates |
41.86 | 2344 | 100% | 2344 | 1 |
openstax_science |
28.26 | 3984 | 100% | 3984 | 1 |
openstax_society |
22.32 | 4890 | 100% | 4890 | 1 |
wpa_life_histories |
20.84 | 3768 | 100% | 3768 | 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.