bailiwick vs domain

bailiwick and domain both are nouns.

Word	Noun	Adjective	Verb	Adverb
bailiwick	Yes	No	No	No
domain	Yes	No	No	No

As nouns, domain is a hypernym of bailiwick; that is, domain is a word with a broader meaning than bailiwick:

Other hypernyms of bailiwick include knowledge base, knowledge domain.

bailiwick (noun)	domain (noun)
a branch of knowledge	the content of a particular field of knowledge
the area over which a bailiff has jurisdiction	people in general; especially a distinctive group of people with some shared interest
	(mathematics) the set of values of the independent variable for which a function is defined
	territory over which rule or control is exercised
	a particular environment or walk of life