How to say "exploration" in Japanese

Choosing the right word
  • 探検たんけんJLPT N1approx.Common
    noun, suru verb, transitive verbUse for exploration in the physical sense: travelling to unknown or little-known places, as in an expedition. It suits explorers venturing into distant regions rather than searching for a specific thing.
    この探検たんけんには、お金かねがかかる。↗
    This expedition will be expensive.
  • 探索たんさくCommon
    noun, suru verb, transitive verbCovers exploration as a search: hunting for something, combing an area, or a lookup. When 'exploration' means an expedition into unknown lands, this is not the word you want.
    その島しまは隅々すみずみまで探索たんさくされている。↗
    Every part of the island has been explored.

Use 探検 for the expedition sense of 'exploration'—travelling into unknown or little-known places—and 探索 for exploration as searching, hunting, or lookup for a target.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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