wallah vs worker

wallah and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
wallah	Yes	No	No	No
worker	Yes	No	No	No

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

wallah: usually in combination: person in charge of or employed at a particular thing
worker: a person who works at a specific occupation

wallah (noun)	worker (noun)
usually in combination: person in charge of or employed at a particular thing	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