tetracaine vs local anaesthetic

tetracaine and local anaesthetic both are nouns.

Word	Noun	Adjective	Verb	Adverb
tetracaine	Yes	No	No	No
local anaesthetic	Yes	No	No	No

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

tetracaine: a crystalline compound used in the form of a hydrochloride as a local anesthetic
local anaesthetic: anesthetic that numbs a particular area of the body

Other hypernyms of tetracaine include local, local anesthetic, topical anaesthetic, topical anesthetic.

tetracaine (noun)	local anaesthetic (noun)
a crystalline compound used in the form of a hydrochloride as a local anesthetic	anesthetic that numbs a particular area of the body