idolatry -
The admiration of somebody or something.
Wikipedia
Idolatry is usually defined as worship of any image, idea, or object, as opposed to the worship of a monotheistic God. It is considered a major sin in the Abrahamic religions punishable by death, whereas in religions where such activity is not considered a sin, the term "idolatry" itself is absent. Which images, ideas, and objects, constitute idolatry, and which constitute reasonable worship, is a matter of contention with some religious authorities and groups using the term to describe certain other religions apart from their own (sometimes resulting in iconoclasm).