sulfatovssulfuroWhich spelling fits?

Which to use

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

#28,575
“sulfato” frequency rank
#38,981
“sulfuro” frequency rank
67556
confusion score

Side-by-Side Comparison

Feature sulfato sulfuro
Definition Cuerpo resultante de la combinación del ácido sulfúrico con un radical mineral u orgánico. Un sulfuro es la combinación del azufre (número de oxidación -2) con un elemento químico o con un radical.

Where the eye mixes sulfato and sulfuro

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. sulfato and sulfuro follow the identical consonant-vowel pattern (CVCCVCV). Same shape at a glance is often the real trap, independent of shared letters.

7 ch
sulfato
7 ch
sulfuro

Why the eye confuses sulfato with sulfuro

A purely visual mix-up. sulfato ([sulˈfat̪o]) and sulfuro ([sulˈfuɾo]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 67556, derived from the frequency rank of both members and their visual similarity.

sulfato is recorded at frequency rank #28,575, classified as anoun, pronounced [sulˈfat̪o]. sulfuro is at rank #38,981, tagged as anoun, pronounced [sulˈfuɾo].

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 67556, this pair ranks #36,803 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of sulfato vs sulfuro

Shared letters: flosu. Private to "sulfato": at. Private to "sulfuro": r.

"sulfato" · 7 letters · shape CVCCVCV  ·  "sulfuro" · 7 letters · shape CVCCVCV

Known mistypes of this pair

  • sulfato ← slufato · ssulfato · suflato · sulafto · sulfaot · sulfatto · sulffato · sulftao
  • sulfuro ← slufuro · ssulfuro · sufluro · sulffuro · sulfruo · sulfuor · sulfurro · sullfuro

Frequently Asked Questions

Do "sulfato" and "sulfuro" mean the same thing in a sentence?
No. They are said differently ([sulˈfat̪o] versus [sulˈfuɾo]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sulfato" or "sulfuro"?
"sulfato" is the more common of the two: it sits at frequency rank #28,575 in our Spanish list, against #38,981 for "sulfuro". 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 "sulfato" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sulfuro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,803 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sulfato" and "sulfuro" also get mixed up with nearby pairs, the highest-scored neighbour is "sulfúrico vs sulfuro". 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 #36,803 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