Bumps
These bumps are called nodules
the bumps on the moon are called craters which has happened by comets and other objects.
The red bumps on a turkey's head are called CARUNCLES.
They are called milk glands(bumps) prepares baby's milk
Warts
They are called manarilose
osteoderms
The "bumps" you refer to are called the "lobes". They are a precise size that allows the valves to open and close correctly in an engine.
The bumps on our skin are called goose bumps as they resemble the bumpy skin of a goose after it has been plucked.
The little bumps are called moguls.
Ribosomes.