Spanish word pensar comes from Latin pendo, and later Latin penso (Pay for, purchase. Ponder, consider. Weigh, counterbalance.)
pendo (Latin)
(figuratively) I consider, ponder.. I pay.. I suspend, hang.. I weigh, weigh out.
penso (Latin)
Pay for, purchase. Ponder, consider. Weigh, counterbalance.
pensar (Spanish)
To intend; to try. To reflect upon a situation. To think. To think about.