Which to use
“internal” is an adjective and “intervals” is a noun - they look or sound alike but fill different roles in a sentence.
- #2,209
- “internal” frequency rank
- #11,402
- “intervals” frequency rank
- 13611
- confusion score
Side-by-Side Comparison
| Feature | internal | intervals |
|---|---|---|
| Definition | Of or situated on the inside. | plural of interval |
Where the eye mixes internal and intervals
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Look-alike desk: internal vs intervals
These two trip readers on the page rather than in the ear: internal is /ɪnˈtɜː.nəl/ while intervals is /ˈɪntɚvəlz/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 13611, derived from the frequency rank of both members and their visual similarity.
internal is recorded at frequency rank #2,209, classified as anadj, pronounced /ɪnˈtɜː.nəl/. intervals is at rank #11,402, tagged as anoun, pronounced /ˈɪntɚvəlz/.
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 13611, this pair ranks #474,783 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of internal vs intervals
Shared letters: aeilnrt. Private to "internal": -. Private to "intervals": sv.
"internal" · 8 letters · shape VCCVCCVC · "intervals" · 9 letters · shape VCCVCCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "internal" and "intervals" be used interchangeably?
Which is more common, "internal" or "intervals"?
After this comparison
Eye-level mix-up between "internal" and "intervals" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "internal" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "intervals" - compare definitions side by side with the headword page. Word entry
- This pair ranks #474,783 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "internal" and "intervals" also get mixed up with nearby pairs, the highest-scored neighbour is "infernal vs internal". 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 #474,783 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.