pakvsPDFWhich spelling fits?

Quick tell: pak is a adverb, PDF is an abbrev, so they fill different roles in a sentence.

Which to use

“pak” is an adverb and “PDF” is an abbrev - they look or sound alike but fill different roles in a sentence.

#33,218
“pak” frequency rank
#2,257
“PDF” frequency rank
35475
confusion score

Side-by-Side Comparison

Feature pak PDF
Definition dann, daraufhin Portable Document Format, Dateiformat, das sich problemlos auf verschiedenen Softwareplattformen austauschen lässt

Where the eye mixes pak and PDF

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
pak
3 ch
PDF

Why the eye confuses pak with PDF

These two trip readers on the page rather than in the ear: pak is [pak] while PDF is [ˌpeːdeːˈʔɛf]. 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 (adverb vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 35475, derived from the frequency rank of both members and their visual similarity.

pak is recorded at frequency rank #33,218, classified as anadv, pronounced [pak]. PDF is at rank #2,257, tagged as anabbrev, pronounced [ˌpeːdeːˈʔɛf].

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 35475, this pair ranks #1,639,099 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of pak vs PDF

Shared letters: p. Private to "pak": ak. Private to "PDF": df.

"pak" · 3 letters · shape CVC  ·  "PDF" · 3 letters · shape CCC

Frequently Asked Questions

Do "pak" and "PDF" mean the same thing in a sentence?
No - they are not even the same part of speech. "pak" is an adverb and "PDF" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "pak" or "PDF" show up more?
"PDF" is the more common of the two: it sits at frequency rank #2,257 in our German list, against #33,218 for "pak". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "pak" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "PDF" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,639,099 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "pak" and "PDF" also get mixed up with nearby pairs, the highest-scored neighbour is "pak vs prank". Nearby pair

Confusion rank #1,639,099 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