# CA

> English word · Noun · frequency rank #2,148

## Definitions
1. Initialism of cellular automaton.
2. Initialism of certificate authority.
3. Initialism of armored cruiser, a type of warship.
4. Initialism of heavy cruiser, a variant of the cruiser type of warship.
5. Initialism of civil affairs, a military occupational specialty or branch.
6. Abbreviation of cyanoacrylate.
7. Initialism of chartered accountant.
8. Initialism of cabin attendant.
9. Initialism of central authority.
10. Initialism of Companies Act.
11. Initialism of communications assistant.
12. Initialism of closed access, as opposed to open access.
13. Initialism of conversation analysis.

## Easily confused with
- **co** (https://plainspell.com/en/vs/ca-vs-co)
- **CD** (https://plainspell.com/en/vs/ca-vs-cd)
- **CM** (https://plainspell.com/en/vs/ca-vs-cm)
- **CC** (https://plainspell.com/en/vs/ca-vs-cc)
- **CT** (https://plainspell.com/en/vs/ca-vs-ct)
- **CR** (https://plainspell.com/en/vs/ca-vs-cr)
- **ch** (https://plainspell.com/en/vs/ca-vs-ch)
- **cs** (https://plainspell.com/en/vs/ca-vs-cs)
- **Cl** (https://plainspell.com/en/vs/ca-vs-cl)
- **CE** (https://plainspell.com/en/vs/ca-vs-ce)
- **cp** (https://plainspell.com/en/vs/ca-vs-cp)
- **CB** (https://plainspell.com/en/vs/ca-vs-cb)
- **CV** (https://plainspell.com/en/vs/ca-vs-cv)
- **CU** (https://plainspell.com/en/vs/ca-vs-cu)
- **CW** (https://plainspell.com/en/vs/ca-vs-cw)
- **ci** (https://plainspell.com/en/vs/ca-vs-ci)
- **CJ** (https://plainspell.com/en/vs/ca-vs-cj)
- **CG** (https://plainspell.com/en/vs/ca-vs-cg)
- **CX** (https://plainspell.com/en/vs/ca-vs-cx)
- **cz** (https://plainspell.com/en/vs/ca-vs-cz)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/ca