fasvsFSJTell them apart

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

Which to use

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

#38,095
“fas” frequency rank
#32,537
“FSJ” frequency rank
70632
confusion score

Side-by-Side Comparison

Feature fas FSJ
Definition 2. Person Singular Imperativ Präsens Aktiv des Verbs fasen Freiwilliges Soziales Jahr / freiwilliges soziales Jahr

Where the eye mixes fas and FSJ

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
fas
3 ch
FSJ

Visual trap between fas and FSJ

These two trip readers on the page rather than in the ear: fas is [faːs] while FSJ is [ɛfʔɛsˈjɔt]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 70632, derived from the frequency rank of both members and their visual similarity.

fas is recorded at frequency rank #38,095, classified as averb, pronounced [faːs]. FSJ is at rank #32,537, tagged as anoun, pronounced [ɛfʔɛsˈjɔt].

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 70632, this pair ranks #440,407 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of fas vs FSJ

Shared letters: fs. Private to "fas": a. Private to "FSJ": j.

"fas" · 3 letters · shape CVC  ·  "FSJ" · 3 letters · shape CCC

Frequently Asked Questions

Can "fas" and "FSJ" be used interchangeably?
No - they are not even the same part of speech. "fas" is a verb and "FSJ" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "fas" or "FSJ" show up more?
"FSJ" is the more common of the two: it sits at frequency rank #32,537 in our German list, against #38,095 for "fas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "fas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "FSJ" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #440,407 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "fas" and "FSJ" also get mixed up with nearby pairs, the highest-scored neighbour is "fas vs fist". Nearby pair

Confusion rank #440,407 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