People would sometimes consider pirates to be searching for treasure commonly, and they would sometimes use 'booty' or loot as pirate speak slang, the treasures they would find were usually consisting of gold, magic objects, jewelry, and other various flashy objects.
"I found treasure buried just beneath our picnic table!"
"I treasure you more than anyone in the world"
"The treasure of lying underneath the full moon"
"Yarr, there be tha treasure up ahead, set full sail to that ther' cave!"