sonvsstConfusable pair

Quick tell: son is a noun, st is an intj, so they fill different roles in a sentence.

Which to use

“son” is a noun and “st” is an intj - they look or sound alike but fill different roles in a sentence.

#40
“son” frequency rank
#5,259
“st” frequency rank
5299
confusion score

Side-by-Side Comparison

Feature son st
Definition Sonido rítmico. ¡Silencio!, ¡chito!, ¡callarse!

Where the eye mixes son and st

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
son
2 ch
st

Why the eye confuses son with st

These two trip readers on the page rather than in the ear: son is [ˈsõn] while st is [st]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs intj), which is usually the fastest check. Our composite confusion score for this pair is 5299, derived from the frequency rank of both members and their visual similarity.

son is recorded at frequency rank #40, classified as anoun, pronounced [ˈsõn]. st is at rank #5,259, tagged as anintj, pronounced [st].

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 5299, this pair ranks #313,978 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of son vs st

Shared letters: s. Private to "son": no. Private to "st": t.

"son" · 3 letters · shape CVC  ·  "st" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "son" for "st" ever safe?
No - they are not even the same part of speech. "son" is a noun and "st" an intj, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "son" vs "st" - which ranks higher?
"son" is the more common of the two: it sits at frequency rank #40 in our Spanish list, against #5,259 for "st". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "son" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "st" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #313,978 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "son" and "st" also get mixed up with nearby pairs, the highest-scored neighbour is "st vs stem". Nearby pair

Confusion rank #313,978 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