introduction vs school text

introduction and school text both are nouns.

Word	Noun	Adjective	Verb	Adverb
introduction	Yes	No	No	No
school text	Yes	No	No	No

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

Other hypernyms of introduction include schoolbook, text, text edition, textbook.

introduction (noun)	school text (noun)
the act of putting one thing into another	a book prepared for use in schools or colleges
the act of beginning something new
the act of starting something for the first time; introducing something new
the first section of a communication
formally making a person known to another or to the public
a basic or elementary instructional text
a new proposal