Hair papillae
its called a globular cluster
a cluster is the panel that tells you your speed, rpm, etc.. they usually call it your cluster panel.
A chain or cluster of islands is called an archipelago.
Tuft
Cluster beans
Only the cells of the hair bulb are alive to understand this more here is how the hair bulb if formed. Hair follicles forms a cluster of cells in the upper layer of the skin. These cluster of cells are called the primitive hair germ, which needs nourishment to grow into a developed hair follicle. To get nourishment it works all the way down into the lower layer of the skin. As it does, the cell cluster pulls the upper layer down with it creating a follicle called the root Sheath, out of which the hair will grow. The shape of this follicle then determines the shape of the hair shaft as it grows from the follicle.
a grove of trees
A clutch .
what do we call the hair specialist doctor?
Open cluster
A star cluster. See related question