ICAOvsicesWhat's the difference?

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

Which to use

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

#41,186
“ICAO” frequency rank
#48,810
“ices” frequency rank
89996
confusion score

Side-by-Side Comparison

Feature ICAO ices
Definition Acronym of International Civil Aviation Organization, a United Nations agency headquartered in Montreal, Canada. plural of ice

Where the spellings diverge

Shared letters are muted; the letters that actually set ICAO and ices apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch
ICAO
4 ch
ices

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: ICAO is /ˌaɪˈkeɪˌoʊ/ while ices is /ˈaɪsɪz/. 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 (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 89996, derived from the frequency rank of both members and their visual similarity.

ICAO is recorded at frequency rank #41,186, classified as aname, pronounced /ˌaɪˈkeɪˌoʊ/. ices is at rank #48,810, tagged as anoun, pronounced /ˈaɪsɪz/.

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 89996, this pair ranks #4,585 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of ICAO vs ices

Shared letters: ci. Private to "ICAO": ao. Private to "ices": es.

"ICAO" · 4 letters · shape VCVV  ·  "ices" · 4 letters · shape VCVC

Known mistypes of this pair

  • ICAOiaco · iccao · icoa
  • icescies · icces · icess · icse · iecs

Frequency comparison

ICAO#41,186
ices#48,810

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ICAO" and "ices" be used interchangeably?
No - they are not even the same part of speech. "ICAO" is a name and "ices" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ICAO" or "ices"?
"ICAO" is the more common of the two: it sits at frequency rank #41,186 in our English list, against #48,810 for "ices". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering ICAO vs ices

The fastest way to pick the right one every time.

  • Check the role first: if you need a name, it's “ICAO”; for a noun, it's “ices”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “ICAO” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list