MFvsMgWhich spelling fits?

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

Which to use

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

#31,604
“MF” frequency rank
#10,743
“Mg” frequency rank
42347
confusion score

Side-by-Side Comparison

Feature MF Mg
Definition Sigle de modulation de fréquence. Symbole chimique du magnésium.

Letter map: MF vs Mg

Shared letters muted; letters that set MF and Mg apart highlighted. Shared run: 1.

2 ch
MF
2 ch
Mg

Part-of-speech tell for MF / Mg

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: MF is anoun and Mgasymbol. On the page they differ by a single letter - f in “MF” becomes g in “Mg”. Our composite confusion score for this pair is 42347, derived from the frequency rank of both members and their visual similarity.

MF is recorded at frequency rank #31,604, classified as anoun, pronounced \ɛm.ɛf\. Mg is at rank #10,743, 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 42347, this pair ranks #226,306 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of MF vs Mg

Shared letters: m. Private to "MF": f. Private to "Mg": g.

"MF" · 2 letters · shape CC  ·  "Mg" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "MF" for "Mg" ever safe?
No - they are not even the same part of speech. "MF" is a noun and "Mg" a symbol, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "MF" or "Mg" show up more?
"Mg" is the more common of the two: it sits at frequency rank #10,743 in our French list, against #31,604 for "MF". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "MF" and "Mg".

  • Full dictionary entry for "MF" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Mg" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #226,306 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "MF" and "Mg" also get mixed up with nearby pairs, the highest-scored neighbour is "MF vs MWh". Nearby pair

Confusion rank #226,306 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