Base difficulty: Level 23 edit
Level distribution for preposition (preposition_other): 6: 10 10: 7 11: 8 14: 1 18: 4 23: 2 226: 5 1080: 1 1120: 1
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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 |
385.04 | 283 | 100% | 283 | 1 |
20th_books |
364.52 | 305 | 100% | 305 | 1 |
wiki_math |
256.38 | 527 | 100% | 527 | 1 |
wiki_geography |
785.04 | 124 | 100% | 124 | 1 |
wiki_biology |
777.90 | 125 | 100% | 125 | 1 |
wiki_modern_life |
414.78 | 236 | 100% | 236 | 1 |
wiki_arts |
637.29 | 154 | 100% | 154 | 1 |
wiki_society |
801.13 | 110 | 100% | 110 | 1 |
wiki_linguistics |
735.73 | 164 | 100% | 164 | 1 |
wiki_physical_science |
310.50 | 427 | 100% | 427 | 1 |
wiki_history |
681.81 | 137 | 100% | 137 | 1 |
early_modern_science |
444.23 | 238 | 100% | 238 | 1 |
religious_translated |
793.62 | 158 | 100% | 158 | 1 |
cooking |
68.74 | 1437 | 100% | 1437 | 1 |
legal_scotus |
295.89 | 424 | 100% | 424 | 1 |
eu_parliament_debates |
223.43 | 553 | 100% | 553 | 1 |
openstax_science |
285.93 | 456 | 100% | 456 | 1 |
openstax_society |
691.97 | 153 | 100% | 153 | 1 |
wpa_life_histories |
201.22 | 542 | 100% | 542 | 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.