CDU vs co, What's the Difference?

Which to use

“CDU” is a name and “co” is a noun - they look or sound alike but fill different roles in a sentence.

#37,372
“CDU” frequency rank: #617
“co” frequency rank: 37989
confusion score

Side-by-Side Comparison

Feature	CDU	co
Definition	Initialism of Christian Democratic Union (of Germany) (“Christlich Demokratische Union”) (a major mainstream German political party)	Clipping of company.

Letter map: CDU vs co

Shared letters muted; letters that set CDU and co apart highlighted. Shared run: 1. CDU runs 3 letters (CCV) against co's 2 (CV) - the length gap alone is often enough to separate them once you know to check it.

3 ch

CDU

2 ch

Part-of-speech tell for CDU / co

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: CDU is aname and coanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37989, derived from the frequency rank of both members and their visual similarity.

CDU is recorded at frequency rank #37,372, classified as aname. co is at rank #617, tagged as anoun, pronounced /kəʊ/.

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 37989, this pair ranks #289,793 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of CDU vs co

Shared letters: c. Private to "CDU": du. Private to "co": o.

"CDU" · 3 letters · shape CCV · "co" · 2 letters · shape CV

Frequently Asked Questions

Is swapping "CDU" for "co" ever safe?

No - they are not even the same part of speech. "CDU" is a name and "co" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "CDU" or "co"?

"co" is the more common of the two: it sits at frequency rank #617 in our English list, against #37,372 for "CDU". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "CDU" vs "co" is on the table, pick a follow-up below.

Full dictionary entry for "CDU" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "co" - compare definitions side by side with the headword page. Word entry
This pair ranks #289,793 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"CDU" and "co" also get mixed up with nearby pairs, the highest-scored neighbour is "CDU vs CGT". Nearby pair

Confusion rank #289,793 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.