PDF vs prüf, What's the Difference?

Which to use

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

#2,257
“PDF” frequency rank: #44,153
“prüf” frequency rank: 46410
confusion score

Side-by-Side Comparison

Feature	PDF	prüf
Definition	Portable Document Format, Dateiformat, das sich problemlos auf verschiedenen Softwareplattformen austauschen lässt	2. Person Singular Imperativ Präsens Aktiv des Verbs prüfen

Where the spellings diverge

Shared letters are muted; the letters that actually set PDF and prüf apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

PDF

4 ch

prüf

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: PDF is [ˌpeːdeːˈʔɛf] while prüf is [pʁyːf]. 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 (abbrev vs verb), which is usually the fastest check. Our composite confusion score for this pair is 46410, derived from the frequency rank of both members and their visual similarity.

PDF is recorded at frequency rank #2,257, classified as anabbrev, pronounced [ˌpeːdeːˈʔɛf]. prüf is at rank #44,153, tagged as averb, pronounced [pʁyːf].

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 46410, this pair ranks #1,320,081 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of PDF vs prüf

Shared letters: fp. Private to "PDF": d. Private to "prüf": rü.

"PDF" · 3 letters · shape CCC · "prüf" · 4 letters · shape CCVC

Frequency comparison

PDF#2,257

prüf#44,153

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "PDF" and "prüf" be used interchangeably?

No - they are not even the same part of speech. "PDF" is an abbrev and "prüf" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "PDF" or "prüf"?

"PDF" is the more common of the two: it sits at frequency rank #2,257 in our German list, against #44,153 for "prüf". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering PDF vs prüf

The fastest way to pick the right one every time.

Check the role first: if you need an abbrev, it's “PDF”; for a verb, it's “prüf”.
See each word in full, definition, IPA, etymology and its other confusables. Full “PDF” entry
Browse more pairs most likely to be confused. Most confusable