QC ingredients: critical ingredients under quality inspection of related herbs.
Blood ingredients: bona fide constituents absorbed into the blood and can be detected in blood.
Metabolic ingredients: metabolites that were metabolized by different organs.
Summarized terms: called syndromes, covers a group of symptoms appeared simultaneously.
Ontological terms: basic terms represents mutually exclusive symptoms.
Synonymous terms: more or less synonymous to basic terms facilitating further symptom mapping and retrieving.