fuavsfuiWhat's the difference?

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

Which to use

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

#41,930
“fua” frequency rank
#852
“fui” frequency rank
42782
confusion score

Side-by-Side Comparison

Feature fua fui
Definition Hígado hipertrofiado obtenido de ocas o patos engordados a la fuerza, considerado un manjar selecto. Primera persona del singular (yo) del pretérito perfecto simple de indicativo de ser.

Where the eye mixes fua and fui

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. fua and fui follow the identical consonant-vowel pattern (CVV). Same shape at a glance is often the real trap, independent of shared letters.

3 ch
fua
3 ch
fui

Why the eye confuses fua with fui

These two trip readers on the page rather than in the ear: fua is [ˈfwa] while fui is [ˈfwi]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “fua” becomes i in “fui”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 42782, derived from the frequency rank of both members and their visual similarity.

fua is recorded at frequency rank #41,930, classified as anoun, pronounced [ˈfwa]. fui is at rank #852, tagged as averb, pronounced [ˈfwi].

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 42782, this pair ranks #146,327 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fua vs fui

Shared letters: fu. Private to "fua": a. Private to "fui": i.

"fua" · 3 letters · shape CVV  ·  "fui" · 3 letters · shape CVV

Frequently Asked Questions

Can "fua" and "fui" be used interchangeably?
No - they are not even the same part of speech. "fua" is a noun and "fui" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fua" or "fui"?
"fui" is the more common of the two: it sits at frequency rank #852 in our Spanish list, against #41,930 for "fua". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "fua" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #146,327 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fua" and "fui" also get mixed up with nearby pairs, the highest-scored neighbour is "fora vs fua". Nearby pair

Confusion rank #146,327 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