Which to use
“ides” and “ILS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #44,856
- “ides” frequency rank
- #39,360
- “ILS” frequency rank
- 84216
- confusion score
Side-by-Side Comparison
| Feature | ides | ILS |
|---|---|---|
| Definition | The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months. | Initialism of instrument landing system. |
Letter map: ides vs ILS
Shared letters muted; letters that set ides and ILS apart highlighted. Shared run: 2.
Corpus notes: ides and ILS
ides and ILS 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 84216, derived from the frequency rank of both members and their visual similarity.
ides is recorded at frequency rank #44,856, classified as anoun, pronounced /aɪdz/. ILS is at rank #39,360, 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 84216, this pair ranks #12,480 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of ides vs ILS
Shared letters: is. Private to "ides": de. Private to "ILS": l.
"ides" · 4 letters · shape VCVC · "ILS" · 3 letters · shape VCC
Known mistypes of this pair
- ides ← iddes · idess · idse · ieds
Frequently Asked Questions
Can "ides" and "ILS" be used interchangeably?
In ordinary English text, does "ides" or "ILS" show up more?
After this comparison
Done with this confusable. These links stay specific to "ides" and "ILS".
- Full dictionary entry for "ides" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ILS" - compare definitions side by side with the headword page. Word entry
- This pair ranks #12,480 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ides" and "ILS" also get mixed up with nearby pairs, the highest-scored neighbour is "ices vs ides". 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 #12,480 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.