live wire vs worker

live wire and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
live wire	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of live wire; that is, worker is a word with a broader meaning than live wire:

Other hypernyms of live wire include actor, doer.

live wire (noun)	worker (noun)
an alert and energetic person	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done