iesvsiOSWhat's the difference?

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

Which to use

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

#45,988
“ies” frequency rank
#5,888
“iOS” frequency rank
51876
confusion score

Side-by-Side Comparison

Feature ies iOS
Definition plural of i, the name of the letter I. A mobile operating system (OS) created and developed by Apple Inc. exclusively for its hardware.

Letter map: ies vs iOS

Shared letters muted; letters that set ies and iOS apart highlighted. Shared run: 2.

3 ch
ies
3 ch
iOS

Role in the sentence - ies and iOS

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ies is anoun and iOSaname. On the page they differ by a single letter - e in “ies” becomes o in “iOS”. Our composite confusion score for this pair is 51876, derived from the frequency rank of both members and their visual similarity.

ies is recorded at frequency rank #45,988, classified as anoun. iOS is at rank #5,888, tagged as aname.

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 51876, this pair ranks #161,715 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ies vs iOS

Shared letters: is. Private to "ies": e. Private to "iOS": o.

"ies" · 3 letters · shape VVC  ·  "iOS" · 3 letters · shape VVC

Frequently Asked Questions

Do "ies" and "iOS" mean the same thing in a sentence?
No - they are not even the same part of speech. "ies" is a noun and "iOS" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "ies" or "iOS" show up more?
"iOS" is the more common of the two: it sits at frequency rank #5,888 in our English list, against #45,988 for "ies". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "ies" and "iOS". Here's where to go from here.

  • Full dictionary entry for "ies" 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 #161,715 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ies" and "iOS" also get mixed up with nearby pairs, the highest-scored neighbour is "ies vs ith". Nearby pair

Confusion rank #161,715 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