CDCvscoWhat's the difference?

Quick tell: CDC is a name, co is a noun, so they fill different roles in a sentence.

Which to use

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

#13,113
“CDC” frequency rank
#617
“co” frequency rank
13730
confusion score

Side-by-Side Comparison

Feature CDC co
Definition Initialism of Control Data Corporation. Clipping of company.

Where the spellings diverge

Shared letters are muted; the letters that actually set CDC and co apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch
CDC
2 ch
co

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: CDC is aname and coanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13730, derived from the frequency rank of both members and their visual similarity.

CDC is recorded at frequency rank #13,113, 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 13730, this pair ranks #474,142 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of CDC vs co

Shared letters: c. Private to "CDC": d. Private to "co": o.

"CDC" · 3 letters · shape CCC  ·  "co" · 2 letters · shape CV

Frequency comparison

CDC#13,113
co#617

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "CDC" and "co" be used interchangeably?
No - they are not even the same part of speech. "CDC" is a name and "co" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "CDC" or "co"?
"co" is the more common of the two: it sits at frequency rank #617 in our English list, against #13,113 for "CDC". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering CDC vs co

The fastest way to pick the right one every time.

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

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

Source: FrequencyWords open word-frequency list