covering vs tin-plating

covering and tin-plating both are nouns.

Word	Noun	Adjective	Verb	Adverb
covering	Yes	No	No	No
tin-plating	Yes	No	No	No

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

covering (noun)	tin-plating (noun)
the act of protecting something by covering it	the application of a protective layer of tin
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