Purpose to Travel

Wanderlust:  It is described as the desire to exchange the known for both the unknown and familiar to unfamiliar. It is short term tour.  For  e.g.  Cultural tour.

Sunlust: Sunlust travelers are the adventure travelers. They enjoy sun and sand, and mostly are young.
It is a long term tour in comparison to wanderlust. For e.g. trekking, sporting etc.