plugvsprüfWhat's the difference?

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

Which to use

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

#19,006
“plug” frequency rank
#44,153
“prüf” frequency rank
63159
confusion score

Side-by-Side Comparison

Feature plug prüf
Definition Stöpsel 2. Person Singular Imperativ Präsens Aktiv des Verbs prüfen

Where the eye mixes plug and prüf

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

4 ch
plug
4 ch
prüf

Visual trap between plug and prüf

These two trip readers on the page rather than in the ear: plug is [plʌɡ] while prüf is [pʁyːf]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 63159, derived from the frequency rank of both members and their visual similarity.

plug is recorded at frequency rank #19,006, classified as anoun, pronounced [plʌɡ]. 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 63159, this pair ranks #686,679 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of plug vs prüf

Shared letters: p. Private to "plug": glu. Private to "prüf": frü.

"plug" · 4 letters · shape CCVC  ·  "prüf" · 4 letters · shape CCVC

Known mistypes of this pair

  • pluglpug · plgu · pllug · plugg · pplug · pulg

Frequently Asked Questions

Is swapping "plug" for "prüf" ever safe?
No - they are not even the same part of speech. "plug" is a noun and "prüf" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "plug" vs "prüf" - which ranks higher?
"plug" is the more common of the two: it sits at frequency rank #19,006 in our German list, against #44,153 for "prüf". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "plug" and "prüf" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "plug" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "prüf" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #686,679 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "plug" and "prüf" also get mixed up with nearby pairs, the highest-scored neighbour is "Pau vs prüf". 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 #686,679 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