covering vs lubrication

covering and lubrication both are nouns.

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

As nouns, lubrication is a hyponym of covering; that is, lubrication is a word with a more specific, narrower meaning than covering:

covering (noun)	lubrication (noun)
the act of protecting something by covering it	an application of a lubricant to something
the work of applying something	the condition of having been made smooth or slippery by the application of a lubricant
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