Herbs are medicinal use, schrubs for fodder and trees for oxygen

By telling about the the herb !!!

Some plants are herbs, some plants are shrubs and some trees, how to define a herbs and shrubs trees

This division is based mainly on the physical nature of the plant. If it is short, not growing above a man's height, having life span of about one or two years and with no hard stem it is herb. All the parts of a herb iis used in medicine. A shrub is in bet' herb and tree in height, toughness and life span; a tree can be very tall, tough and can live for many years. Part of shrub or tree and not the whole plant is used, unlike herbs, in medicine.

Herbs have a variety of uses including culinary, medicinal, or in some cases even spiritual usage. General usage differs between culinary herbs and medicinal herbs. In medicinal or spiritual use any of the parts of the plant might be considered "herbs", including leaves, roots, flowers, seeds, resin, root bark, inner bark (cambium), berries and sometimes the pericarp or other portions.

A herb is a plant that is valued for qualities such as medicinal properties, flavor, scent, or the like.