tags and categories are two sides of the same ontology coin with tags, the ontology is built from the bottom-up without a hierarchy or direction with categori

tags and categories are two sides of the same ontology coin with tags, the ontology is built from the bottom-up without a hierarchy or direction with categories, the ontology is built from the top-down and usually a hierarchy at the end of the day, they are both simply a subset of the english language associated with content