曽祖父

1. Origins, structure, and basic meaning

• Structure: 曽祖父 is read as そうそふ and is a noun for one's great-grandfather, the father of a grandparent.
• Basic usage: A desk he used appears in 曽祖父が使っていた机, while a story about him appears in 曽祖父の話.

2. Common pitfalls and similar expressions

• Generation in the family
  • From the speaker's perspective, it identifies a male ancestor three generations above.
• Difference from 祖父
  • 祖父 is one's grandfather, the father of a parent, while 曽祖父 is one generation above him.