ILS vs isle, What's the Difference?

Which to use

“ILS” and “isle” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#39,360
“ILS” frequency rank: #9,198
“isle” frequency rank: 48558
confusion score

Side-by-Side Comparison

Feature	ILS	isle
Definition	Initialism of instrument landing system.	An island, usually very small. Compare with islet.

Where the spellings diverge

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

3 ch

ILS

4 ch

isle

Spelling & Dictionary Insight

ILS and isle are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48558, derived from the frequency rank of both members and their visual similarity.

ILS is recorded at frequency rank #39,360, classified as anoun. isle is at rank #9,198, tagged as anoun, pronounced /aɪ̯l/.

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 48558, this pair ranks #191,904 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ILS vs isle

Shared letters: ils. Private to "ILS": -. Private to "isle": e.

"ILS" · 3 letters · shape VCC · "isle" · 4 letters · shape VCCV

Known mistypes of this pair

isle ← ilse · isel · islle · issle · sile

Frequency comparison

ILS#39,360

isle#9,198

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ILS" and "isle" be used interchangeably?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Which is more common, "ILS" or "isle"?

"isle" is the more common of the two: it sits at frequency rank #9,198 in our English list, against #39,360 for "ILS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering ILS vs isle

The fastest way to pick the right one every time.

Read both glosses above and match the meaning you intend, only context separates this pair.
See each word in full, definition, IPA, etymology and its other confusables. Full “ILS” entry
Browse more pairs most likely to be confused. Most confusable