médianevsméthaneWhich spelling fits?

Quick tell: médiane is a adjective, méthane is a noun, so they fill different roles in a sentence.

Which to use

“médiane” is an adjective and “méthane” is a noun - they look or sound alike but fill different roles in a sentence.

#14,743
“médiane” frequency rank
#19,074
“méthane” frequency rank
33817
confusion score

Side-by-Side Comparison

Feature médiane méthane
Definition Féminin singulier de médian. Hydrocarbure saturé, premier membre de la famille des paraffines, de formule brute CH₄. Aussi appelé protocarbure d’hydrogène ou hydrure de méthyle, c’est un gaz inodore plus léger que l’air, facilement liquéfiable. Très inflammable à l’air libre, ce gaz est le principal composant du gaz naturel, il prend naissance dans la fermentation des matières organiques, d’où son autre nom de « gaz des marais ».

Where the eye mixes médiane and méthane

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. médiane (CVCVVCV) and méthane (CVCCVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

7 ch
médiane
7 ch
méthane

Visual trap between médiane and méthane

These two trip readers on the page rather than in the ear: médiane is \me.djan\ while méthane is \me.tan\. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 33817, derived from the frequency rank of both members and their visual similarity.

médiane is recorded at frequency rank #14,743, classified as anadj, pronounced \me.djan\. méthane is at rank #19,074, tagged as anoun, pronounced \me.tan\.

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 33817, this pair ranks #288,082 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of médiane vs méthane

Shared letters: aemné. Private to "médiane": di. Private to "méthane": ht.

"médiane" · 7 letters · shape CVCVVCV  ·  "méthane" · 7 letters · shape CVCCVCV

Frequently Asked Questions

Is swapping "médiane" for "méthane" ever safe?
No - they are not even the same part of speech. "médiane" is an adjective and "méthane" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "médiane" or "méthane"?
"médiane" is the more common of the two: it sits at frequency rank #14,743 in our French list, against #19,074 for "méthane". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "médiane" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "méthane" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #288,082 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "médiane" and "méthane" also get mixed up with nearby pairs, the highest-scored neighbour is "Meghan vs méthane". Nearby pair

Confusion rank #288,082 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