MP4vsmurWhich spelling fits?

Quick tell: MP4 is a name, mur is a noun, so they fill different roles in a sentence.

Which to use

“MP4” is a name and “mur” is a noun - they look or sound alike but fill different roles in a sentence.

#49,242
“MP4” frequency rank
#1,531
“mur” frequency rank
50773
confusion score

Side-by-Side Comparison

Feature MP4 mur
Definition Norme d’encodage multimédia (audio ou vidéo) sous forme numérique. Édification généralement verticale élevée en divers matériaux, pour enclore un espace, séparer des pièces, ou soutenir quelque chose.

Where the eye mixes MP4 and mur

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
MP4
3 ch
mur

Look-alike desk: MP4 vs mur

These two trip readers on the page rather than in the ear: MP4 is \ɛm.pe.katʁ\ while mur is \myʁ\. 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 (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 50773, derived from the frequency rank of both members and their visual similarity.

MP4 is recorded at frequency rank #49,242, classified as aname, pronounced \ɛm.pe.katʁ\. mur is at rank #1,531, tagged as anoun, pronounced \myʁ\.

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 50773, this pair ranks #160,090 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of MP4 vs mur

Shared letters: m. Private to "MP4": p. Private to "mur": ru.

"MP4" · 2 letters · shape CC  ·  "mur" · 3 letters · shape CVC

Frequently Asked Questions

Can "MP4" and "mur" be used interchangeably?
No - they are not even the same part of speech. "MP4" is a name and "mur" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "MP4" or "mur" show up more?
"mur" is the more common of the two: it sits at frequency rank #1,531 in our French list, against #49,242 for "MP4". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "MP4" and "mur" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "MP4" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #160,090 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "MP4" and "mur" also get mixed up with nearby pairs, the highest-scored neighbour is "MP4 vs MWh". Nearby pair

Confusion rank #160,090 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