lubrication vs covering

lubrication and covering both are nouns.

Word	Noun	Adjective	Verb	Adverb
lubrication	Yes	No	No	No
covering	Yes	No	No	No

As nouns, covering is a hypernym of lubrication; that is, covering is a word with a broader meaning than lubrication:

Other hypernyms of lubrication include application, coating.

lubrication (noun)	covering (noun)
an application of a lubricant to something	the act of protecting something by covering it
the condition of having been made smooth or slippery by the application of a lubricant	the work of applying something
	the act of concealing the existence of something by obstructing the view of it
	an artifact that covers something else (usually to protect or shelter or conceal it)
	a natural object that covers or envelops