standard vs textbook

standard and textbook both are nouns.

Word	Noun	Adjective	Verb	Adverb
standard	Yes	Yes	No	No
textbook	Yes	Yes	No	No

standard (noun)	textbook (noun)
any distinctive flag	a book prepared for use in schools or colleges
an upright pole or beam (especially one used as a support)
the ideal in terms of which something can be judged
a basis for comparison; a reference point against which other things can be evaluated
the value behind the money in a monetary system
a board measure = 1980 board feet

standard (adjective)	textbook (adjective)
established or well-known or widely recognized as a model of authority or excellence	according to or characteristic of a casebook or textbook; typical
conforming to or constituting a standard of measurement or value; or of the usual or regularized or accepted kind
conforming to the established language usage of educated native speakers
commonly used or supplied
regularly and widely used or sold