Delving into details: "investigation" vs. "research"

What is similar?
Both "investigation" and "research" involve a systematic process of inquiry and examination to discover facts or gain information.
What is different?
An "investigation" is usually a formal inquiry into a specific event, situation, or crime, often aimed at finding evidence or answering specific questions. It implies a narrower focus and is often associated with legal or official contexts. "Research", on the other hand, is a broader term that refers to the systematic study of a topic or phenomenon to establish facts, reach new conclusions, or develop theories. It is often used in academic or scientific contexts and implies a more general pursuit of knowledge.
Which one is more common?

Examples of usage
Investigation- The police launched an investigation into the robbery that occurred last night.
- The internal investigation revealed discrepancies in the financial reports.
- The journalist conducted an investigation to uncover the truth behind the company's practices.
- She is conducting research on climate change impacts on marine life.
- The study was based on extensive research in the field of neuroscience.
- His research into ancient civilizations provided new insights into their cultures.