Which to use
“kg” is a symbol and “ku” is a noun - they look or sound alike but fill different roles in a sentence.
- #3,770
- “kg” frequency rank
- #22,917
- “ku” frequency rank
- 26687
- confusion score
Side-by-Side Comparison
| Feature | kg | ku |
|---|---|---|
| Definition | Symbole du kilogramme, unité de mesure de masse du Système international (SI), valant 10³ grammes. | Lettre latine Q, q. |
Letter map: kg vs ku
Shared letters muted; letters that set kg and ku apart highlighted. Shared run: 1.
Grammar separator: kg vs ku
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: kg is asymbol and kuanoun. On the page they differ by a single letter - g in “kg” becomes u in “ku”. Our composite confusion score for this pair is 26687, derived from the frequency rank of both members and their visual similarity.
kg is recorded at frequency rank #3,770, classified as asymbol. ku is at rank #22,917, tagged as anoun, pronounced \ky\.
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 26687, this pair ranks #333,454 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of kg vs ku
Shared letters: k. Private to "kg": g. Private to "ku": u.
"kg" · 2 letters · shape CC · "ku" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "kg" for "ku" ever safe?
Frequency check: "kg" vs "ku" - which ranks higher?
After this comparison
Pair "kg" vs "ku" is on the table, pick a follow-up below.
- Full dictionary entry for "kg" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ku" - compare definitions side by side with the headword page. Word entry
- This pair ranks #333,454 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "kg" and "ku" also get mixed up with nearby pairs, the highest-scored neighbour is "ku vs ky". Nearby pair
Confusion rank #333,454 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.