duvsduckTell them apart

Quick tell: du is a pronoun, duck is a noun, so they fill different roles in a sentence.

Which to use

“du” is a pronoun and “duck” is a noun - they look or sound alike but fill different roles in a sentence.

#5,609
“du” frequency rank
#34,070
“duck” frequency rank
39679
confusion score

Side-by-Side Comparison

Feature du duck
Definition Tú (pronombre de segunda persona singular familiar o informal) Pato.

Where the eye mixes du and duck

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch
du
4 ch
duck

Visual trap between du and duck

These two trip readers on the page rather than in the ear: du is [duː] while duck is /dʌk/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “du” sits inside “duck”, and the parts of speech differ too (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 39679, derived from the frequency rank of both members and their visual similarity.

du is recorded at frequency rank #5,609, classified as apron, pronounced [duː]. duck is at rank #34,070, tagged as anoun, pronounced /dʌk/.

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 39679, this pair ranks #163,222 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of du vs duck

Shared letters: du. Private to "du": -. Private to "duck": ck.

"du" · 2 letters · shape CV  ·  "duck" · 4 letters · shape CVCC

Known mistypes of this pair

  • duckdcuk · dduck · ducck · duckk · dukc · udck

Frequently Asked Questions

Is swapping "du" for "duck" ever safe?
No - they are not even the same part of speech. "du" is a pronoun and "duck" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "du" vs "duck" - which ranks higher?
"du" is the more common of the two: it sits at frequency rank #5,609 in our Spanish list, against #34,070 for "duck". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "du" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "duck" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #163,222 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "du" and "duck" also get mixed up with nearby pairs, the highest-scored neighbour is "duck vs ducto". 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 #163,222 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