graphology vs discipline

graphology and discipline both are nouns.

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

As nouns, discipline is a hypernym of graphology; that is, discipline 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)
discipline: a branch of knowledge

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

graphology (noun)	discipline (noun)
the study of handwriting (especially as an indicator of the writer's character or disposition)	training to improve strength or self-control
	the act of disciplining
	the trait of being well behaved
	a branch of knowledge
	a system of rules of conduct or method of practice

graphology (verb)	discipline (verb)
	punish in order to gain control or enforce obedience
	develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control