IOCvsIosWhich spelling fits?

Quick tell: IOC is a abbrev, Ios is a noun, so they fill different roles in a sentence.

Which to use

“IOC” is an abbrev and “Ios” is a noun - they look or sound alike but fill different roles in a sentence.

#15,121
“IOC” frequency rank
#6,549
“Ios” frequency rank
21670
confusion score

Side-by-Side Comparison

Feature IOC Ios
Definition Abkürzung für International Olympic Committee Genitiv Singular des Substantivs Io

Letter map: IOC vs Ios

Shared letters muted; letters that set IOC and Ios apart highlighted. Shared run: 2.

3 ch
IOC
3 ch
Ios

Part-of-speech tell for IOC / Ios

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IOC is anabbrev and Iosanoun. On the page they differ by a single letter - c in “IOC” becomes s in “Ios”. Our composite confusion score for this pair is 21670, derived from the frequency rank of both members and their visual similarity.

IOC is recorded at frequency rank #15,121, classified as anabbrev. Ios is at rank #6,549, tagged as anoun, pronounced [ˈiːos].

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 21670, this pair ranks #1,883,501 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of IOC vs Ios

Shared letters: io. Private to "IOC": c. Private to "Ios": s.

"IOC" · 3 letters · shape VVC  ·  "Ios" · 3 letters · shape VVC

Frequently Asked Questions

Is swapping "IOC" for "Ios" ever safe?
No - they are not even the same part of speech. "IOC" is an abbrev and "Ios" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "IOC" or "Ios"?
"Ios" is the more common of the two: it sits at frequency rank #6,549 in our German list, against #15,121 for "IOC". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "IOC" and "Ios". Here's where to go from here.

  • Full dictionary entry for "IOC" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Ios" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,883,501 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "IOC" and "Ios" also get mixed up with nearby pairs, the highest-scored neighbour is "IMs vs IOC". Nearby pair

Confusion rank #1,883,501 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list