Tuber vs. Tuberculum — What's the Difference?

Tubers are enlarged structures used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction.

Tubercle

A swollen, fleshy, usually underground outgrowth of the stem or rhizome of a plant, such as the potato, bearing buds from which new plant shoots arise.

A tubercle.

A similar outgrowth of a plant root.

A rounded projection or swelling; a tubercle.

A fleshy, thickened underground stem of a plant, usually containing stored starch, for example a potato or arrowroot.

(horticulture) A thickened rootstock.

(anatomy) A rounded, protuberant structure in a human or animal body.

A fleshy, rounded stem or root, usually containing starchy matter, as the potato or arrowroot; a thickened root-stock. See Illust. of Tuberous.

A tuberosity; a tubercle.

A fleshy underground stem or root serving for reproductive and food storage

Type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles