Appreciation: (noun)

A feeling or expression of grateful recognition.
An understanding or awareness of the worth, quality, or significance of something.
Sensitive perception or discernment, especially of beauty or excellence.
An increase in value.

Passion: (noun)

A strong, intense, or overpowering emotion.
Ardent affection or deep enthusiasm for something.
A powerful drive, desire, or devotion that motivates action.
Strong feeling or excitement expressed outwardly.