What is the difference between an explorer and a conquistador?

Answer 1

A conquistador was Spanish and looked only for riches and power. A conquistador had 3 Gs: gold, God, and glory. Gold for riches, God for converting people to Catholicism - since the majority of Spaniards, including royalty were Catholics (and still are) at the time - and glory for power. An exploerer could be from any country and had motivations which were diverse and might include scientific curiosity, personal fame, or they were on a mission from their host country to explore new land and claim it. Conquistadors are gone now, but we still have explorers.

Answer 2

The Conquistadors conquered the Incas. that is the main difference, the conquistadors were Spanish conquerors. Incas were an ancient civilisation.