seinvsStirnWhat's the difference?

Quick tell: sein is a verb, Stirn is a noun, so they fill different roles in a sentence.

Which to use

“sein” is a verb and “Stirn” is a noun - they look or sound alike but fill different roles in a sentence.

#63
“sein” frequency rank
#6,359
“Stirn” frequency rank
6422
confusion score

Side-by-Side Comparison

Feature sein Stirn
Definition Kopula, die dem Subjekt ein logisches Prädikat zuordnet der Teil des Gesichts zwischen Augenbrauen und Haaransatz

Where the eye mixes sein and Stirn

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

4 ch
sein
5 ch
Stirn

Why the eye confuses sein with Stirn

These two trip readers on the page rather than in the ear: sein is [zaɪ̯n] while Stirn is [ʃtɪʁn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 6422, derived from the frequency rank of both members and their visual similarity.

sein is recorded at frequency rank #63, classified as averb, pronounced [zaɪ̯n]. Stirn is at rank #6,359, tagged as anoun, pronounced [ʃtɪʁn].

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 6422, this pair ranks #1,991,693 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sein vs Stirn

Shared letters: ins. Private to "sein": e. Private to "Stirn": rt.

"sein" · 4 letters · shape CVVC  ·  "Stirn" · 5 letters · shape CCVCC

Known mistypes of this pair

  • seinesin · seinn · seni · sien · ssein
  • Stirnsitrn · sstirn · stinr · stirnn · stirrn · strin · sttirn · tsirn

Frequently Asked Questions

Is swapping "sein" for "Stirn" ever safe?
No - they are not even the same part of speech. "sein" is a verb and "Stirn" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "sein" vs "Stirn" - which ranks higher?
"sein" is the more common of the two: it sits at frequency rank #63 in our German list, against #6,359 for "Stirn". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Stirn" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,991,693 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sein" and "Stirn" also get mixed up with nearby pairs, the highest-scored neighbour is "Stilen vs Stirn". 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 #1,991,693 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list