drilling vs drill

drilling and drill both are nouns.

Word	Noun	Adjective	Verb	Adverb
drilling	Yes	No	No	No
drill	Yes	No	Yes	No

drilling (noun)	drill (noun)
the act of drilling a hole in the earth in the hope of producing petroleum	systematic training by multiple repetitions
the act of drilling	(military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of arms
	similar to the mandrill but smaller and less brightly colored
	a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)

drilling (verb)	drill (verb)
	learn by repetition
	teach by repetition
	train in the military, e.g., in the use of weapons
	undergo military training or do military exercises
	make a hole, especially with a pointed power or hand tool