dervsducWhat's the difference?

Quick tell: der is a determiner, duc is a noun, so they fill different roles in a sentence.

Which to use

“der” is a determiner and “duc” is a noun - they look or sound alike but fill different roles in a sentence.

#2
“der” frequency rank
#48,075
“duc” frequency rank
48077
confusion score

Side-by-Side Comparison

Feature der duc
Definition definiter Artikel (bestimmtes Geschlechtswort) der Herzog, der Führer

Where the eye mixes der and duc

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

3 ch
der
3 ch
duc

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: der is [deːɐ̯] while duc is [duk]. 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 (determiner vs noun), which is usually the fastest check. Our composite confusion score for this pair is 48077, derived from the frequency rank of both members and their visual similarity.

der is recorded at frequency rank #2, classified as adet, pronounced [deːɐ̯]. duc is at rank #48,075, tagged as anoun, pronounced [duk].

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 48077, this pair ranks #1,261,618 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of der vs duc

Shared letters: d. Private to "der": er. Private to "duc": cu.

"der" · 3 letters · shape CVC  ·  "duc" · 3 letters · shape CVC

Frequently Asked Questions

Can "der" and "duc" be used interchangeably?
No - they are not even the same part of speech. "der" is a determiner and "duc" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "der" or "duc"?
"der" is the more common of the two: it sits at frequency rank #2 in our German list, against #48,075 for "duc". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list