semvssteamWhat's the difference?

Quick tell: sem is a preposition, steam is a noun, so they fill different roles in a sentence.

Which to use

“sem” is a preposition and “steam” is a noun - they look or sound alike but fill different roles in a sentence.

#19,985
“sem” frequency rank
#10,951
“steam” frequency rank
30936
confusion score

Side-by-Side Comparison

Feature sem steam
Definition Sans. Vapeur (eau en phase gazeuse).

Where the eye mixes sem and steam

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

3 ch
sem
5 ch
steam

Why the eye confuses sem with steam

These two trip readers on the page rather than in the ear: sem is \sɐ̃j\ while steam is \stiːm\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 30936, derived from the frequency rank of both members and their visual similarity.

sem is recorded at frequency rank #19,985, classified as aprep, pronounced \sɐ̃j\. steam is at rank #10,951, tagged as anoun, pronounced \stiːm\.

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 30936, this pair ranks #307,039 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sem vs steam

Shared letters: ems. Private to "sem": -. Private to "steam": at.

"sem" · 3 letters · shape CVC  ·  "steam" · 5 letters · shape CCVVC

Known mistypes of this pair

  • steamsetam · ssteam · staem · steamm · stema · stteam · tseam

Frequently Asked Questions

Is swapping "sem" for "steam" ever safe?
No - they are not even the same part of speech. "sem" is a preposition and "steam" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "sem" or "steam" show up more?
"steam" is the more common of the two: it sits at frequency rank #10,951 in our French list, against #19,985 for "sem". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "sem" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "steam" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #307,039 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sem" and "steam" also get mixed up with nearby pairs, the highest-scored neighbour is "sem vs suu". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #307,039 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