classroom vs school

classroom and school both are nouns.

Word	Noun	Adjective	Verb	Adverb
classroom	Yes	No	No	No
school	Yes	No	Yes	No

classroom (noun)	school (noun)
a room in a school where lessons take place	a building where young people receive education
	the process of being formally educated at a school
	an educational institution
	a large group of fish
	a body of creative artists or writers or thinkers linked by a similar style or by similar teachers
	an educational institution's faculty and students
	the period of instruction in a school; the time period when school is in session

classroom (verb)	school (verb)
	swim in or form a large group of fish
	educate in or as if in a school
	teach or refine to be discriminative in taste or judgment