Satisfy
Part of speech: verb
Definition: To do enough; to meet (needs); to fulfill (wishes, requirements). To cause (a sentence) to be true when (the sentence) is interpreted in one's universe.
Example sentence: Love is the hardest habit to break, and the most difficult to satisfy.
Fulfil
Part of speech: verb
Definition: To fill up.To satisfy, carry out, bring to completion (an obligation, a requirement, etc.).To emotionally or artistically satisfy; to develop one's gifts to the fullest.To obey, follow, comply with (a rule, requirement etc.).