firmasvsformarConfusable pair

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

Which to use

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

#3,924
“firmas” frequency rank
#1,814
“formar” frequency rank
5738
confusion score

Side-by-Side Comparison

Feature firmas formar
Definition Forma del plural de firma. Dar forma o figura, crear, componer.

Where the eye mixes firmas and formar

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

6 ch
firmas
6 ch
formar

Visual trap between firmas and formar

These two trip readers on the page rather than in the ear: firmas is [ˈfiɾmas] while formar is [foɾˈmaɾ]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 5738, derived from the frequency rank of both members and their visual similarity.

firmas is recorded at frequency rank #3,924, classified as anoun, pronounced [ˈfiɾmas]. formar is at rank #1,814, tagged as averb, pronounced [foɾˈmaɾ].

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 5738, this pair ranks #312,793 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of firmas vs formar

Shared letters: afmr. Private to "firmas": is. Private to "formar": o.

"firmas" · 6 letters · shape CVCCVC  ·  "formar" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • firmasffirmas · fimras · firams · firmass · firmmas · firmsa · firrmas · frimas
  • formarfformar · fomrar · foramr · formarr · formmar · formra · forrmar · fromar

Frequently Asked Questions

Is swapping "firmas" for "formar" ever safe?
No - they are not even the same part of speech. "firmas" is a noun and "formar" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "firmas" vs "formar" - which ranks higher?
"formar" is the more common of the two: it sits at frequency rank #1,814 in our Spanish list, against #3,924 for "firmas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "firmas" and "formar" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "firmas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "formar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #312,793 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "firmas" and "formar" also get mixed up with nearby pairs, the highest-scored neighbour is "fora vs formar". 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 #312,793 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