to create  - crear, hacer 

to cause  - causar, provocar, ocasionar 

to originate  - originar, iniciar, crear, originarse, empezar, provenir, proceder, derivarse 

to believe  - creer 

to suppose  - suponer, imaginarse, creer 

to think  - pensar, razonar, considerar, creer, opinar, reflexionar, ocurrirse, concebir