ethyl chloride vs local

ethyl chloride and local both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethyl chloride	Yes	No	No	No
local	Yes	Yes	No	No

As nouns, local is a hypernym of ethyl chloride; that is, local is a word with a broader meaning than ethyl chloride:

ethyl chloride: a colorless flammable gas used as a local surface anesthetic
local: anesthetic that numbs a particular area of the body

Other hypernyms of ethyl chloride include local anaesthetic, local anesthetic, topical anaesthetic, topical anesthetic.

ethyl chloride (noun)	local (noun)
a colorless flammable gas used as a local surface anesthetic	public transport consisting of a bus or train that stops at all stations or stops
	anesthetic that numbs a particular area of the body

ethyl chloride (adjective)	local (adjective)
	relating to or applicable to or concerned with the administration of a city or town or district rather than a larger area
	affecting only a restricted part or area of the body
	of or belonging to or characteristic of a particular locality or neighborhood