Which to use
“CDU” and “CSU” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #614
- “CDU” frequency rank
- #1,348
- “CSU” frequency rank
- 1962
- confusion score
Side-by-Side Comparison
| Feature | CDU | CSU |
|---|---|---|
| Definition | Christlich Demokratische Union [Deutschlands] | Kurzwort für Christlich-Soziale Union (in Bayern (e. V.)) |
Where the spellings diverge
Shared letters are muted; the letters that actually set CDU and CSU apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
CDU and CSU form a confusable pair in the German index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by a single letter - d in “CDU” becomes s in “CSU” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 1962, derived from the frequency rank of both members and their visual similarity.
CDU is recorded at frequency rank #614, classified as anabbrev, pronounced [tseːdeːˈʔuː]. CSU is at rank #1,348, tagged as anabbrev, pronounced [tseːʔɛsˈʔuː].
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 1962, this pair ranks #2,003,374 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "CDU" and "CSU" be used interchangeably?
Remembering CDU vs CSU
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “CDU” entry
- Browse more pairs most likely to be confused. Most confusable