rationalism vs doctrine

rationalism and doctrine both are nouns.

Word	Noun	Adjective	Verb	Adverb
rationalism	Yes	No	No	No
doctrine	Yes	No	No	No

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

rationalism: the doctrine that reason is the right basis for regulating conduct
doctrine: a belief (or system of beliefs) accepted as authoritative by some group or school

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

rationalism (noun)	doctrine (noun)
the doctrine that reason is the right basis for regulating conduct	a belief (or system of beliefs) accepted as authoritative by some group or school
(philosophy) the doctrine that knowledge is acquired by reason without resort to experience
the theological doctrine that human reason rather than divine revelation establishes religious truth