Base Difficulty

Base difficulty: Level 12 edit

Level distribution for numeral (ordinal): 12: 10 490: 10

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 703 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600

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 118.28 806 100% 806 1
20th_books 106.43 930 100% 930 1
wiki_math 189.40 724 100% 724 1
wiki_geography 249.79 497 100% 497 1
wiki_biology 198.44 670 100% 670 1
wiki_modern_life 174.54 776 100% 776 1
wiki_arts 300.97 366 100% 366 1
wiki_society 206.91 608 100% 608 1
wiki_linguistics 214.43 618 100% 618 1
wiki_physical_science 170.94 848 100% 848 1
wiki_history 286.31 395 100% 395 1
early_modern_science 244.14 446 100% 446 1
religious_translated 228.79 472 100% 472 1
cooking 306.50 483 100% 483 1
legal_scotus 179.31 722 100% 722 1
eu_parliament_debates 364.73 334 100% 334 1
openstax_science 208.22 680 100% 680 1
openstax_society 204.62 686 100% 686 1
wpa_life_histories 96.13 1053 100% 1053 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.