Which to use
“key” is an adjective and “kWh” is a symbol - they look or sound alike but fill different roles in a sentence.
- #18,240
- “key” frequency rank
- #19,333
- “kWh” frequency rank
- 37573
- confusion score
Side-by-Side Comparison
| Feature | key | kWh |
|---|---|---|
| Definition | Dominant, principal. | Symbole du kilowatt-heure, unité de mesure d’énergie. |
Where the eye mixes key and kWh
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between key and kWh
These two trip readers on the page rather than in the ear: key is \kiː\ while kWh is \ki.lo.wa.t‿œʁ\. 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 (adjective vs symbol), which is usually the fastest check. Our composite confusion score for this pair is 37573, derived from the frequency rank of both members and their visual similarity.
key is recorded at frequency rank #18,240, classified as anadj, pronounced \kiː\. kWh is at rank #19,333, tagged as asymbol, pronounced \ki.lo.wa.t‿œʁ\.
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 37573, this pair ranks #261,553 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of key vs kWh
Shared letters: k. Private to "key": ey. Private to "kWh": hw.
"key" · 3 letters · shape CVV · "kWh" · 3 letters · shape CCC
Frequently Asked Questions
Can "key" and "kWh" be used interchangeably?
Frequency check: "key" vs "kWh" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "key" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "kWh" - compare definitions side by side with the headword page. Word entry
- This pair ranks #261,553 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "key" and "kWh" also get mixed up with nearby pairs, the highest-scored neighbour is "kWh vs ky". Nearby pair
Confusion rank #261,553 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.