1. Chrysanthemum is a perennial herb of Compositae and Chrysanthemum in plant taxonomy, which is the general name of all chrysanthemums. Chamomile is a kind of chrysanthemum, which contains chamomile, but it can't represent all the categories of chrysanthemum.

2. Chamomile is a perennial herb of Compositae, with a height of 1.5m and stolons underground. The stems are erect, the branches are sparse, and the basal leaves and lower leaves fall off when flowering.