政治家

1. Origins, structure, and basic meaning

• Structure: 政治家(せいじか) means a politician, a person active in politics.
• Basic usage: It is used for someone explaining policies or working on local affairs.

2. Common pitfalls and similar expressions

• 家 for a person's field of activity
  • Added to 政治(せいじ), 家(か) indicates a person active in that field.
• What the effort is directed toward
  • 町の再建に力を注いだ means devoting effort to rebuilding the town. に marks the goal of that effort.