casusvsCyrusTell them apart

Quick tell: casus is a noun, Cyrus is a name, so they fill different roles in a sentence.

Which to use

“casus” is a noun and “Cyrus” is a name - they look or sound alike but fill different roles in a sentence.

#48,398
“casus” frequency rank
#12,547
“Cyrus” frequency rank
60945
confusion score

Side-by-Side Comparison

Feature casus Cyrus
Definition Chute. Nom de famille.

Letter map: casus vs Cyrus

Shared letters muted; letters that set casus and Cyrus apart highlighted. Shared run: 3. casus and Cyrus follow the identical consonant-vowel pattern (CVCVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
casus
5 ch
Cyrus

Role in the sentence - casus and Cyrus

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: casus is anoun and Cyrusaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 60945, derived from the frequency rank of both members and their visual similarity.

casus is recorded at frequency rank #48,398, classified as anoun. Cyrus is at rank #12,547, tagged as aname.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 60945, this pair ranks #94,921 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of casus vs Cyrus

Shared letters: csu. Private to "casus": a. Private to "Cyrus": ry.

"casus" · 5 letters · shape CVCVC  ·  "Cyrus" · 5 letters · shape CVCVC

Known mistypes of this pair

  • casus ← acsus · cassu · cassus · casuss · causs · ccasus · csaus
  • Cyrus ← ccyrus · cryus · cyrrus · cyrsu · cyruss · cyurs · cyyrus · ycrus

Frequently Asked Questions

Can "casus" and "Cyrus" be used interchangeably?
No - they are not even the same part of speech. "casus" is a noun and "Cyrus" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "casus" vs "Cyrus" - which ranks higher?
"Cyrus" is the more common of the two: it sits at frequency rank #12,547 in our French list, against #48,398 for "casus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "casus" and "Cyrus". Here's where to go from here.

  • Full dictionary entry for "casus" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Cyrus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #94,921 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "casus" and "Cyrus" also get mixed up with nearby pairs, the highest-scored neighbour is "cakes vs casus". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #94,921 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list