K7vskmWhich spelling fits?

Quick tell: K7 is a noun, km is a symbol, so they fill different roles in a sentence.

Which to use

“K7” is a noun and “km” is a symbol - they look or sound alike but fill different roles in a sentence.

#44,010
“K7” frequency rank
#1,030
“km” frequency rank
45040
confusion score

Side-by-Side Comparison

Feature K7 km
Definition Autre graphie de cassette, dans son sens de vidéocassette ou cassette audio. Symbole du kilomètre, unité de mesure de longueur du Système international (SI), valant 1000 mètres (10³ mètres).

Letter map: K7 vs km

Shared letters muted; letters that set K7 and km apart highlighted. Shared run: 1.

2 ch
K7
2 ch
km

Part-of-speech tell for K7 / km

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: K7 is anoun and kmasymbol. On the page they differ by a single letter - 7 in “K7” becomes m in “km”. Our composite confusion score for this pair is 45040, derived from the frequency rank of both members and their visual similarity.

K7 is recorded at frequency rank #44,010, classified as anoun, pronounced \ka.sɛt\. km is at rank #1,030, tagged as asymbol.

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 45040, this pair ranks #205,858 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of K7 vs km

Shared letters: k. Private to "K7": -. Private to "km": m.

"K7" · 1 letters · shape C  ·  "km" · 2 letters · shape CC

Frequently Asked Questions

Can "K7" and "km" be used interchangeably?
No - they are not even the same part of speech. "K7" is a noun and "km" a symbol, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "K7" vs "km" - which ranks higher?
"km" is the more common of the two: it sits at frequency rank #1,030 in our French list, against #44,010 for "K7". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "K7" and "km". Here's where to go from here.

  • Full dictionary entry for "K7" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "km" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #205,858 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "K7" and "km" also get mixed up with nearby pairs, the highest-scored neighbour is "K7 vs ky". Nearby pair

Confusion rank #205,858 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list