How to say "sclerosis" in Japanese

• 硬化こうかCommon
  noun, suru verb, intransitive verbThe common, general word for hardening, including the vulcanization of rubber. It can also express sclerosis in the sense of hardening of body tissue, so it suits medical descriptions of that process.
• 硬化症こうかしょう
  nounThe word for sclerosis as a medical condition or disease. Less common than 硬化, and not used for the hardening of materials or vulcanization; reach for it in medical talk about the condition.

Use 硬化 for hardening in general, including vulcanization and the hardening of body tissue, and 硬化症 when you mean sclerosis specifically as a medical condition; 硬化症 is the less common of the two.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 硬化こうかhardening
• 硬化症こうかしょうsclerosis