pilónvspistónWhich spelling fits?

Which to use

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

#47,991
“pilón” frequency rank
#37,787
“pistón” frequency rank
85778
confusion score

Side-by-Side Comparison

Feature pilón pistón
Definition Receptáculo de piedra, que se construye en las fuentes para que, cayendo el agua en él, sirva de abrevadero, de lavadero o para otros usos. En un motor de combustión, parte móvil del cilindro que transmite la energía de los gases de combustión al cigüeñal mediante un movimiento alternado.

Where the eye mixes pilón and pistón

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

5 ch
pilón
6 ch
pistón

Look-alike desk: pilón vs pistón

A purely visual mix-up. pilón ([piˈlõn]) and pistón ([pisˈt̪õn]) 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 85778, derived from the frequency rank of both members and their visual similarity.

pilón is recorded at frequency rank #47,991, classified as anoun, pronounced [piˈlõn]. pistón is at rank #37,787, tagged as anoun, pronounced [pisˈt̪õn].

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 85778, this pair ranks #5,831 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of pilón vs pistón

Shared letters: inpó. Private to "pilón": l. Private to "pistón": st.

"pilón" · 5 letters · shape CVCVC  ·  "pistón" · 6 letters · shape CVCCVC

Frequently Asked Questions

Is swapping "pilón" for "pistón" ever safe?
No. They are said differently ([piˈlõn] versus [pisˈt̪õn]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "pilón" or "pistón" show up more?
"pistón" is the more common of the two: it sits at frequency rank #37,787 in our Spanish list, against #47,991 for "pilón". 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 "pilón" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pistón" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #5,831 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "pilón" and "pistón" also get mixed up with nearby pairs, the highest-scored neighbour is "pillen vs pilón". Nearby pair

Confusion rank #5,831 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