sillonvsSionWhich spelling fits?

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

Which to use

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

#22,096
“sillon” frequency rank
#16,741
“Sion” frequency rank
38837
confusion score

Side-by-Side Comparison

Feature sillon Sion
Definition Tranchée que le soc, le coutre de la charrue ouvre dans la terre qu’on laboure. Colline de Jérusalem et montagne sacrée, considérée comme l'emplacement historique du palais du roi David et du temple de Salomon.

Where the eye mixes sillon and Sion

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. sillon runs 6 letters (CVCCVC) against Sion's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
sillon
4 ch
Sion

Why the eye confuses sillon with Sion

These two trip readers on the page rather than in the ear: sillon is \si.jɔ̃\ while Sion is \sjɔ̃\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 38837, derived from the frequency rank of both members and their visual similarity.

sillon is recorded at frequency rank #22,096, classified as anoun, pronounced \si.jɔ̃\. Sion is at rank #16,741, tagged as aname, pronounced \sjɔ̃\.

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 38837, this pair ranks #252,448 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sillon vs Sion

Shared letters: inos. Private to "sillon": l. Private to "Sion": -.

"sillon" · 6 letters · shape CVCCVC  ·  "Sion" · 4 letters · shape CVVC

Known mistypes of this pair

  • sillonisllon · sillno · sillonn · siloln · silon · slilon · ssillon
  • Sionison · ssion

Frequently Asked Questions

Can "sillon" and "Sion" be used interchangeably?
No - they are not even the same part of speech. "sillon" is a noun and "Sion" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "sillon" vs "Sion" - which ranks higher?
"Sion" is the more common of the two: it sits at frequency rank #16,741 in our French list, against #22,096 for "sillon". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "sillon" and "Sion" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sillon" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Sion" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #252,448 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sillon" and "Sion" also get mixed up with nearby pairs, the highest-scored neighbour is "sablon vs sillon". 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 #252,448 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