炭酸

1. Origins, structure, and basic meaning

• Structure: 炭酸, read たんさん, refers to carbonation or the carbonic component that gives a drink its fizz.
• Basic usage: It can describe strongly carbonated water or the carbonation bursting from a shaken bottle.

2. Common pitfalls and similar expressions

• Carbonation in a drink
  • This refers to the carbonation in strongly fizzy water or released from a shaken bottle. It does not mean the entire liquid or merely the appearance of bubbles.