communications vs discipline

communications and discipline both are nouns.

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

As nouns, discipline is a hypernym of communications; that is, discipline is a word with a broader meaning than communications:

communications: the discipline that studies the principles of transmitting information and the methods by which it is delivered (as print or radio or television etc.)
discipline: a branch of knowledge

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

communications (noun)	discipline (noun)
the discipline that studies the principles of transmitting information and the methods by which it is delivered (as print or radio or television etc.)	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

communications (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