Explorer and Trekker

Explorer noun - Someone who travels into little known regions (especially for some scientific purpose).

Trekker and explorer are semantically related In some cases you can use "Trekker" instead a noun "Explorer".

Nearby Words: explore, exploration, explored, exploring, explorative

Trekker noun - A traveler who makes a long arduous journey (as hiking through mountainous country).

Explorer and trekker are semantically related in traveler topic. You can use "Explorer" instead a noun "Trekker", if it concerns topics such as person who journeys.