robevsROSWhat's the difference?

Which to use

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

#14,626
“robe” frequency rank
#19,685
“ROS” frequency rank
34311
confusion score

Side-by-Side Comparison

Feature robe ROS
Definition A long loose outer garment, often signifying honorary stature. Abbreviation of reactive oxygen species.

Letter map: robe vs ROS

Shared letters muted; letters that set robe and ROS apart highlighted. Shared run: 2.

4 ch
robe
3 ch
ROS

Corpus notes: robe and ROS

robe and ROS 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 34311, derived from the frequency rank of both members and their visual similarity.

robe is recorded at frequency rank #14,626, classified as anoun, pronounced /ɹəʊb/. ROS is at rank #19,685, 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 34311, this pair ranks #321,909 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of robe vs ROS

Shared letters: or. Private to "robe": be. Private to "ROS": s.

"robe" · 4 letters · shape CVCV  ·  "ROS" · 3 letters · shape CVC

Known mistypes of this pair

  • robeorbe · rboe · robbe · roeb · rrobe

Frequently Asked Questions

Is swapping "robe" for "ROS" ever safe?
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.
Frequency check: "robe" vs "ROS" - which ranks higher?
"robe" is the more common of the two: it sits at frequency rank #14,626 in our English list, against #19,685 for "ROS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "robe" and "ROS".

  • Full dictionary entry for "robe" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ROS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #321,909 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "robe" and "ROS" also get mixed up with nearby pairs, the highest-scored neighbour is "ROS vs Rua". 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 #321,909 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