drilling vs oil production

drilling and oil production both are nouns.

Word	Noun	Adjective	Verb	Adverb
drilling	Yes	No	No	No
oil production	Yes	No	No	No

As nouns, drilling and oil production are synonyms defined as:

drilling and oil production: the act of drilling a hole in the earth in the hope of producing petroleum

Other synonyms of drilling include boring.

drilling (noun)	oil production (noun)
the act of drilling a hole in the earth in the hope of producing petroleum	the act of drilling a hole in the earth in the hope of producing petroleum
the act of drilling