血統

1. Origins, structure, and basic meaning

• Structure: 血統 (けっとう) combines blood 血 and line 統 to denote lineage or pedigree.
• Basic usage: It can identify an animal's documented pedigree or a person's ancestral line in a story.

2. Common pitfalls and similar expressions

• Ancestry does not equal merit
  • 血統 records descent, but it does not itself establish a person's trustworthiness, conduct, or ability.