炭素

1. Origins, structure, and basic meaning

• Structure: 炭素(たんそ) means carbon, the chemical element found in living things and many materials.
• Basic usage: It is used when describing an element in living things or the composition of graphite. Typical patterns are 重要な元素である炭素 and 黒鉛は炭素からできている.

2. Common pitfalls and similar expressions

• Treat it as an element name
  • It does not mean any black material in general; it specifically names the element carbon.
• Difference from 炭
  • 炭(すみ) means charcoal used as a material or fuel, while 炭素 is the chemical element carbon.