majority rule vs doctrine

majority rule and doctrine both are nouns.

Word	Noun	Adjective	Verb	Adverb
majority rule	Yes	No	No	No
doctrine	Yes	No	No	No

As nouns, doctrine is a hypernym of majority rule; that is, doctrine is a word with a broader meaning than majority rule:

majority rule: the doctrine that the numerical majority of an organized group can make decisions binding on the whole group
doctrine: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of majority rule include ism, philosophical system, philosophy, school of thought.

majority rule (noun)	doctrine (noun)
the doctrine that the numerical majority of an organized group can make decisions binding on the whole group	a belief (or system of beliefs) accepted as authoritative by some group or school