décadasvsdecidaTell them apart

Quick tell: décadas is a noun, decida is a verb, so they fill different roles in a sentence.

Which to use

“décadas” is a noun and “decida” is a verb - they look or sound alike but fill different roles in a sentence.

#2,338
“décadas” frequency rank
#9,273
“decida” frequency rank
11611
confusion score

Side-by-Side Comparison

Feature décadas decida
Definition Forma del plural de década. Primera persona del singular (yo) del presente de subjuntivo de decidir o de decidirse.

Where the eye mixes décadas and decida

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

7 ch
décadas
6 ch
decida

Why the eye confuses décadas with decida

These two trip readers on the page rather than in the ear: décadas is [ˈd̪ekað̞as] while decida is [d̪eˈsið̞a]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 11611, derived from the frequency rank of both members and their visual similarity.

décadas is recorded at frequency rank #2,338, classified as anoun, pronounced [ˈd̪ekað̞as]. decida is at rank #9,273, tagged as averb, pronounced [d̪eˈsið̞a].

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 11611, this pair ranks #294,483 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of décadas vs decida

Shared letters: acd. Private to "décadas": . Private to "decida": ei.

"décadas" · 7 letters · shape CVCVCVC  ·  "decida" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • decidadceida · ddecida · deccida · decdia · deciad · decidda · deicda · desida

Frequently Asked Questions

Can "décadas" and "decida" be used interchangeably?
No - they are not even the same part of speech. "décadas" is a noun and "decida" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "décadas" or "decida"?
"décadas" is the more common of the two: it sits at frequency rank #2,338 in our Spanish list, against #9,273 for "decida". 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 "décadas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "decida" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #294,483 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "décadas" and "decida" also get mixed up with nearby pairs, the highest-scored neighbour is "decida vs dolida". 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 #294,483 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