sacovsstackWhich spelling fits?

Which to use

“saco” and “stack” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,166
“saco” frequency rank
#38,497
“stack” frequency rank
40663
confusion score

Side-by-Side Comparison

Feature saco stack
Definition espécie de bolsa de plástico, papel, couro ou pano acúmulo, especialmente organizado no eixo vertical; pilha

Where the eye mixes saco and stack

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

4 ch
saco
5 ch
stack

Why the eye confuses saco with stack

A purely visual mix-up. saco (/ˈsa.ku/) and stack (/stæk/) 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 40663, derived from the frequency rank of both members and their visual similarity.

saco is recorded at frequency rank #2,166, classified as anoun, pronounced /ˈsa.ku/. stack is at rank #38,497, tagged as anoun, pronounced /stæk/.

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 40663, this pair ranks #25,399 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of saco vs stack

Shared letters: acs. Private to "saco": o. Private to "stack": kt.

"saco" · 4 letters · shape CVCV  ·  "stack" · 5 letters · shape CCVCC

Known mistypes of this pair

  • sacosacco · saoc · scao · ssaco
  • stacksatck · sstack · stacck · stackk · stakc · stcak · sttack · tsack

Frequently Asked Questions

Can "saco" and "stack" be used interchangeably?
No. They are said differently (/ˈsa.ku/ versus /stæk/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "saco" vs "stack" - which ranks higher?
"saco" is the more common of the two: it sits at frequency rank #2,166 in our Portuguese list, against #38,497 for "stack". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "saco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "stack" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,399 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "saco" and "stack" also get mixed up with nearby pairs, the highest-scored neighbour is "spark vs stack". 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 #25,399 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list