土台

1. Origins, structure, and basic meaning

• Structure: 土台, read どだい, means the base supporting a building or the basis on which something is established.
• Basic usage: It is used when checking a house's foundation or describing literacy as a basis for learning.
  • 大工は家の土台に腐りがないか調べた。

2. Common pitfalls and similar expressions

• なる and する
  • 土台になる means becoming a basis, while 土台にする means using something as a basis.