ReisvsRSSWhich spelling fits?

Which to use

“Reis” and “RSS” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#49,902
“Reis” frequency rank
#19,666
“RSS” frequency rank
69568
confusion score

Side-by-Side Comparison

Feature Reis RSS
Definition Riz. Famille de formats de données utilisés pour la syndication de contenu Web.

Where the eye mixes Reis and RSS

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
Reis
3 ch
RSS

Look-alike desk: Reis vs RSS

A purely visual mix-up. Reis (\raɪ̯s\) and RSS (\ɛ.ʁ‿ɛ.s‿ɛs\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 69568, derived from the frequency rank of both members and their visual similarity.

Reis is recorded at frequency rank #49,902, classified as anoun, pronounced \raɪ̯s\. RSS is at rank #19,666, tagged as anoun, pronounced \ɛ.ʁ‿ɛ.s‿ɛs\.

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 69568, this pair ranks #54,625 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of Reis vs RSS

Shared letters: rs. Private to "Reis": ei. Private to "RSS": -.

"Reis" · 4 letters · shape CVVC  ·  "RSS" · 3 letters · shape CCC

Known mistypes of this pair

  • Reiseris · reiss · resi · rreis

Frequently Asked Questions

Is swapping "Reis" for "RSS" ever safe?
No. They are said differently (\raɪ̯s\ versus \ɛ.ʁ‿ɛ.s‿ɛs\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "Reis" or "RSS"?
"RSS" is the more common of the two: it sits at frequency rank #19,666 in our French list, against #49,902 for "Reis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "Reis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "RSS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,625 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Reis" and "RSS" also get mixed up with nearby pairs, the highest-scored neighbour is "Reis vs Rhys". 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 #54,625 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