drill

As nouns the difference between drill and drillstock

is that drill is a tool used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece while drillstock is the part of a drill that holds the shank of the bit.

As a verb drill

is to create (a hole) by removing material with a drill tool.

As nouns the difference between drill and semisubmersible

is that drill is drill, exercise while semisubmersible is a specialised marine vessel with good stability and seakeeping characteristics, often used in offshore roles such as oil drilling.

As nouns the difference between drill and mohole

is that drill is drill, exercise while mohole is a hole drilled through the earth's crust into the , part of a scientific project of the 1960s.