As a noun, passion can denote an overwhelming emotional state, ranging from desire to jealousy to hate, as well as a strong sense of love or sexual desire. Additionally, a "passion" can refer to something for which you have a strong enthusiasm.
In obsolete or rare uses, passion can also be used as a transitive verb and means to excite, imbue, impel or express a deep feeling. Consider this example from Shakespeare's "Loves Labours Lost": "With this I passion to say wherewith" (I. i. 253).
In the theological usage, passion denotes the trials, tribulations, suffering and sacrifice of Jesus Christ. Commonly, the Passion refers to the story of Christ's life, death and resurrection. It can also refer to commemorative events of Christ's life, as well as works of art dedicated to or expressing aspects of that story, especially with reference to Christ's crucifixion.
The word passion comes from the classical Latin word passio, before becoming the Anglo-Norman pasioun and the Old French passion. It then became the Old French word paison before being introduced into Old English during the ninth and 10th centuries, finally appearing frequently in early Middle English, primarily in the theological sense.
Common permutations of the word passion include the adjective "passionate," the adverb "passionately" and the adjective "passionless."
The word passion is also found in a host of common phrases. A "passion play" is a dramatic re-enactment of the life of Jesus Christ. A "crime of passion" is a crime incited by a deep emotional response, usually involving romantic intrigues or feelings of jealousy and anger. A "fit of passion" or a "passionate outburst" are overwhelming states of emotion that instigate severe physical responses. Additionally, "passionate embrace" is a common phrase for a loving hug.