术语服务常与术语提供者互换使用，后者专门用于表示提供服务的实体。
The term service is often used interchangeably with the term provider, which specifically denotes the entity that provides the service.
人们常把实在概念和实体概念相混淆，然而，前者是一个认识论概念，后者是一个本体论概念。
The conception of reality used to be confused with the conception of entity, the former is a conception of epistemology, and the latter is a conception of ontology.
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