保証

1. Origins, structure, and basic meaning

• Structure: 保証, read ほしょう, denotes a commitment to stand behind quality, obligation, or another person’s reliability.
• Basic usage: It covers standing behind repair quality and another person vouching for an applicant’s identity.

2. Common pitfalls and similar expressions

• Quality assurance and personal guarantee
  • It is a commitment to stand behind quality or reliability, not merely a prediction that the result will be good.