resvsrulesWhich spelling fits?

Which to use

“res” and “rules” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#10,209
“res” frequency rank
#40,533
“rules” frequency rank
50742
confusion score

Side-by-Side Comparison

Feature res rules
Definition Cabeza de ganado o de caza mayor, especialmente considerado en cuanto a su aprovechamiento alimentario o económico. Forma del plural de rule.

Where the eye mixes res and rules

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

3 ch
res
5 ch
rules

Why the eye confuses res with rules

A purely visual mix-up. res ([ˈres]) and rules (/ɹuːlz/) 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 2 letter(s) in length. Our composite confusion score for this pair is 50742, derived from the frequency rank of both members and their visual similarity.

res is recorded at frequency rank #10,209, classified as anoun, pronounced [ˈres]. rules is at rank #40,533, tagged as anoun, pronounced /ɹuːlz/.

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 50742, this pair ranks #101,588 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of res vs rules

Shared letters: ers. Private to "res": -. Private to "rules": lu.

"res" · 3 letters · shape CVC  ·  "rules" · 5 letters · shape CVCVC

Known mistypes of this pair

  • rulesrlues · rrules · ruels · ruless · rulles · rulse · urles

Frequently Asked Questions

Do "res" and "rules" mean the same thing in a sentence?
No. They are said differently ([ˈres] versus /ɹuːlz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "res" or "rules"?
"res" is the more common of the two: it sits at frequency rank #10,209 in our Spanish list, against #40,533 for "rules". 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 "res" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rules" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #101,588 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "res" and "rules" also get mixed up with nearby pairs, the highest-scored neighbour is "rules vs rulo". 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 #101,588 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list