earthing vs attachment

earthing and attachment both are nouns.

Word	Noun	Adjective	Verb	Adverb
earthing	Yes	No	No	No
attachment	Yes	No	No	No

As nouns, attachment is a hypernym of earthing; that is, attachment is a word with a broader meaning than earthing:

Other hypernyms of earthing include fastening.

earthing (noun)	attachment (noun)
fastening electrical equipment to earth	the act of fastening things together
	the act of attaching or affixing something
	faithful support for a cause or political party or religion
	a supplementary part or accessory
	a connection that fastens things together
	a writ authorizing the seizure of property that may be needed for the payment of a judgment in a judicial proceeding
	a feeling of affection for a person or an institution