Which to use
“REM” is a noun and “ROC” is an abbrev - they look or sound alike but fill different roles in a sentence.
- #35,225
- “REM” frequency rank
- #41,056
- “ROC” frequency rank
- 76281
- confusion score
Side-by-Side Comparison
| Feature | REM | ROC |
|---|---|---|
| Definition | Fase del sueño durante la que suceden los ensueños más intensos. Durante esta fase, los ojos se mueven rápidamente y la actividad de las neuronas del cerebro se asemeja a la de cuando se está despierto. | Sigla de Reglamento Orgánico de Centro. |
Where the eye mixes REM and ROC
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. REM and ROC follow the identical consonant-vowel pattern (CVC). Same shape at a glance is often the real trap, independent of shared letters.
Look-alike desk: REM vs ROC
These two trip readers on the page rather than in the ear: REM is [ˈrẽm] while ROC is [ˈrok]. 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 (noun vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 76281, derived from the frequency rank of both members and their visual similarity.
REM is recorded at frequency rank #35,225, classified as anoun, pronounced [ˈrẽm]. ROC is at rank #41,056, tagged as anabbrev, pronounced [ˈrok].
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 76281, this pair ranks #18,042 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of REM vs ROC
Shared letters: r. Private to "REM": em. Private to "ROC": co.
"REM" · 3 letters · shape CVC · "ROC" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "REM" for "ROC" ever safe?
Frequency check: "REM" vs "ROC" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "REM" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ROC" - compare definitions side by side with the headword page. Word entry
- This pair ranks #18,042 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "REM" and "ROC" also get mixed up with nearby pairs, the highest-scored neighbour is "ROC vs rocks". Nearby pair
Confusion rank #18,042 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.