IagovsIASTell them apart

Quick tell: Iago is a name, IAS is a noun, so they fill different roles in a sentence.

Which to use

“Iago” is a name and “IAS” is a noun - they look or sound alike but fill different roles in a sentence.

#43,699
“Iago” frequency rank
#31,214
“IAS” frequency rank
74913
confusion score

Side-by-Side Comparison

Feature Iago IAS
Definition A male given name. Initialism of indicated airspeed.

Letter map: Iago vs IAS

Shared letters muted; letters that set Iago and IAS apart highlighted. Shared run: 2. Iago runs 4 letters (VVCV) against IAS's 3 (VVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
Iago
3 ch
IAS

Role in the sentence - Iago and IAS

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Iago is aname and IASanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 74913, derived from the frequency rank of both members and their visual similarity.

Iago is recorded at frequency rank #43,699, classified as aname, pronounced /iˈɑːɡəʊ/. IAS is at rank #31,214, tagged as anoun.

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 74913, this pair ranks #34,799 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Iago vs IAS

Shared letters: ai. Private to "Iago": go. Private to "IAS": s.

"Iago" · 4 letters · shape VVCV  ·  "IAS" · 3 letters · shape VVC

Known mistypes of this pair

  • Iago ← aigo · iaggo · iaog · igao

Frequently Asked Questions

Do "Iago" and "IAS" mean the same thing in a sentence?
No - they are not even the same part of speech. "Iago" is a name and "IAS" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Iago" vs "IAS" - which ranks higher?
"IAS" is the more common of the two: it sits at frequency rank #31,214 in our English list, against #43,699 for "Iago". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "Iago" vs "IAS" is on the table, pick a follow-up below.

  • Full dictionary entry for "Iago" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "IAS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #34,799 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Iago" and "IAS" also get mixed up with nearby pairs, the highest-scored neighbour is "Iago vs inga". 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 #34,799 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list