graphology vs bailiwick

graphology and bailiwick both are nouns.

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

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

graphology: the study of handwriting (especially as an indicator of the writer's character or disposition)
bailiwick: a branch of knowledge

Other hypernyms of graphology include discipline, field, field of study, study, subject, subject area, subject field.

graphology (noun)	bailiwick (noun)
the study of handwriting (especially as an indicator of the writer's character or disposition)	a branch of knowledge
	the area over which a bailiff has jurisdiction