Some common meanings include:
* Citizenship Amendment Act (India): A controversial law in India related to citizenship.
* Cabinet: A group of high-ranking officials in a government.
* Community Acquired Bacteria/Bronchitis: In a medical context.
* Computer Aided Building/Design: In architecture or engineering.
* Certificate Authority/Authority Body: In the context of digital certificates or security.
* Cost Accounting Branch: In accounting.
* Call Accounting Bureau: In telecommunications.
And many more... Please give me more context!