paddle box vs covering

paddle box and covering both are nouns.

Word	Noun	Adjective	Verb	Adverb
paddle box	Yes	No	No	No
covering	Yes	No	No	No

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

paddle box: a wooden covering for the upper part of a paddlewheel
covering: an artifact that covers something else (usually to protect or shelter or conceal it)

paddle box (noun)	covering (noun)
a wooden covering for the upper part of a paddlewheel	the act of protecting something by covering it
	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