cucvscuñaWhich spelling fits?

Which to use

“cuc” and “cuña” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#49,555
“cuc” frequency rank
#24,091
“cuña” frequency rank
73646
confusion score

Side-by-Side Comparison

Feature cuc cuña
Definition Gusano. Pequeña pieza de madera o metal, con un borde más delgado, que se introduce entre otras dos piezas para ajustarlas, ensamblarlas, partirlas, separarlas o apretarlas.

Where the eye mixes cuc and cuña

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. cuc runs 3 letters (CVC) against cuña's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
cuc
4 ch
cuña

Why the eye confuses cuc with cuña

A purely visual mix-up. cuc (/kuk/) and cuña ([ˈkuɲa]) 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 73646, derived from the frequency rank of both members and their visual similarity.

cuc is recorded at frequency rank #49,555, classified as anoun, pronounced /kuk/. cuña is at rank #24,091, tagged as anoun, pronounced [ˈkuɲa].

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 73646, this pair ranks #22,886 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of cuc vs cuña

Shared letters: cu. Private to "cuc": -. Private to "cuña": añ.

"cuc" · 3 letters · shape CVC  ·  "cuña" · 4 letters · shape CVCV

Frequently Asked Questions

Is swapping "cuc" for "cuña" ever safe?
No. They are said differently (/kuk/ versus [ˈkuɲa]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "cuc" or "cuña"?
"cuña" is the more common of the two: it sits at frequency rank #24,091 in our Spanish list, against #49,555 for "cuc". 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 "cuc" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cuña" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #22,886 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cuc" and "cuña" also get mixed up with nearby pairs, the highest-scored neighbour is "cuc vs curt". Nearby pair

Confusion rank #22,886 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