Base difficulty: Level 135 edit
Level distribution for noun (path_infrastructure): 24: 1 26: 8 115: 2 135: 1 219: 3 255: 9 405: 2 1020: 2 1050: 1 1399: 10
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
cambridge_yle |
Flyers (3 of 3) | 1200 |
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 |
103.64 | 1047 | 100% | 870 | 2 |
20th_books |
159.44 | 736 | 100% | 606 | 2 |
wiki_math |
227.51 | 747 | 100% | 557 | 2 |
wiki_geography |
32.70 | 4091 | 100% | 4091 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
120.87 | 1697 | 100% | 1200 | 2 |
wiki_arts |
29.07 | 4484 | 100% | 4484 | 1 |
wiki_society |
74.63 | 1882 | 100% | 1882 | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
201.81 | 905 | 100% | 705 | 2 |
wiki_history |
46.15 | 2946 | 100% | 2946 | 1 |
early_modern_science |
142.76 | 1079 | 100% | 796 | 2 |
religious_translated |
339.51 | 403 | 100% | 319 | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
20.85 | 4425 | 100% | 4425 | 1 |
eu_parliament_debates |
54.82 | 1928 | 100% | 1928 | 1 |
openstax_science |
210.71 | 899 | 100% | 661 | 2 |
openstax_society |
64.90 | 2119 | 100% | 2119 | 1 |
wpa_life_histories |
51.09 | 2146 | 100% | 1640 | 2 |
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.