開拓者

1. Origins, structure, and basic meaning

• Structure: 開拓者（かいたくしゃ） means someone who develops land or opens up a new field.
• Basic usage: Use it for a person making barren land usable or a pioneer in a new research field.

2. Common pitfalls and similar expressions

• From land to a field of work
  • 土地の開拓者 means someone who develops land so it can be used.
  • 研究分野の開拓者 figuratively means someone who opens up a new area of research.