博学

1. Origins, structure, and basic meaning

• Structure: The adjectival noun 博学 (はくがく) describes broad and substantial learning across many fields.
• Basic usage: It modifies a person in 博学な人, while 博学ぶり refers to the way that erudition is displayed.

2. Common pitfalls and similar expressions

• Breadth of knowledge
  • It emphasizes knowledge across many areas rather than narrow expertise in one topic.