Which to use
“ohm” is a noun and “one” is a num - they look or sound alike but fill different roles in a sentence.
- #28,649
- “ohm” frequency rank
- #38
- “one” frequency rank
- 28687
- confusion score
Side-by-Side Comparison
| Feature | ohm | one |
|---|---|---|
| Definition | In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere. | The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number. |
Where the eye mixes ohm and one
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses ohm with one
These two trip readers on the page rather than in the ear: ohm is /əʊm/ while one is /wʌn/. 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 num), which is usually the fastest check. Our composite confusion score for this pair is 28687, derived from the frequency rank of both members and their visual similarity.
ohm is recorded at frequency rank #28,649, classified as anoun, pronounced /əʊm/. one is at rank #38, tagged as anum, pronounced /wʌn/.
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 28687, this pair ranks #369,099 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ohm vs one
Shared letters: o. Private to "ohm": hm. Private to "one": en.
"ohm" · 3 letters · shape VCC · "one" · 3 letters · shape VCV
Frequently Asked Questions
Is swapping "ohm" for "one" ever safe?
Which is more common, "ohm" or "one"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "ohm" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "one" - compare definitions side by side with the headword page. Word entry
- This pair ranks #369,099 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ohm" and "one" also get mixed up with nearby pairs, the highest-scored neighbour is "ohm vs omi". Nearby pair
Confusion rank #369,099 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.