literalism vs school of thought

literalism and school of thought both are nouns.

Word	Noun	Adjective	Verb	Adverb
literalism	Yes	No	No	No
school of thought	Yes	No	No	No

As nouns, school of thought is a hypernym of literalism; that is, school of thought is a word with a broader meaning than literalism:

literalism: the doctrine of realistic (literal) portrayal in art or literature
school of thought: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of literalism include doctrine, ism, philosophical system, philosophy.

literalism (noun)	school of thought (noun)
the doctrine of realistic (literal) portrayal in art or literature	a belief (or system of beliefs) accepted as authoritative by some group or school
a disposition to interpret statements in their literal sense