APIvsautConfusable pair

Quick tell: API is a noun, aut is a conjunction, so they fill different roles in a sentence.

Which to use

“API” is a noun and “aut” is a conjunction - they look or sound alike but fill different roles in a sentence.

#19,027
“API” frequency rank
#40,662
“aut” frequency rank
59689
confusion score

Side-by-Side Comparison

Feature API aut
Definition Conjunto de especificaciones e implementación de comunicación entre componentes software. Se trata de de un conjunto de funciones o llamadas al sistema o bien un conjuto de clases y sus métodos cuyo propósito es ofrecer acceso a los servicios de un sistema. O

Where the eye mixes API and aut

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

3 ch
API
3 ch
aut

Visual trap between API and aut

These two trip readers on the page rather than in the ear: API is [ˈapi] while aut is /ˈawt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 59689, derived from the frequency rank of both members and their visual similarity.

API is recorded at frequency rank #19,027, classified as anoun, pronounced [ˈapi]. aut is at rank #40,662, tagged as aconj, pronounced /ˈawt/.

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 59689, this pair ranks #61,710 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of API vs aut

Shared letters: a. Private to "API": ip. Private to "aut": tu.

"API" · 3 letters · shape VCV  ·  "aut" · 3 letters · shape VVC

Frequently Asked Questions

Do "API" and "aut" mean the same thing in a sentence?
No - they are not even the same part of speech. "API" is a noun and "aut" a conjunction, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "API" or "aut" show up more?
"API" is the more common of the two: it sits at frequency rank #19,027 in our Spanish list, against #40,662 for "aut". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "API" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aut" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #61,710 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "API" and "aut" also get mixed up with nearby pairs, the highest-scored neighbour is "anta vs aut". Nearby pair

Confusion rank #61,710 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