precept vs school of thought

precept and school of thought both are nouns.

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

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

precept: a doctrine that is taught
school of thought: a belief (or system of beliefs) accepted as authoritative by some group or school

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

precept (noun)	school of thought (noun)
a doctrine that is taught	a belief (or system of beliefs) accepted as authoritative by some group or school
rule of personal conduct