体液

1. Origins, structure, and basic meaning

• Structure: 体液(たいえき) is a general term for fluids within the body.
• Basic usage: Blood can be given as one example, as in 血液などの体液.

2. Common pitfalls and similar expressions

• Category and example
  • 血液 specifically means blood; 体液 is the broader category.
• The same sound in another word
  • 体液 is read たいえき, but it differs from 退役(たいえき), retirement from active service.