library vs collection

library and collection both are nouns.

Word	Noun	Adjective	Verb	Adverb
library	Yes	No	No	No
collection	Yes	No	No	No

As nouns, collection is a hypernym of library; that is, collection is a word with a broader meaning than library:

library: a collection of literary documents or records kept for reference or borrowing
collection: several things grouped together or considered as a whole

Other hypernyms of library include accumulation, aggregation, assemblage.

As nouns, collection is a hypernym of library; that is, collection is a word with a broader meaning than library:

library: (computing) a collection of standard programs and subroutines that are stored and available for immediate use
collection: several things grouped together or considered as a whole

Other hypernyms of library include accumulation, aggregation, assemblage.

library (noun)	collection (noun)
a depository built to contain books and other materials for reading and study	the act of gathering something together
a room where books are kept	a publication containing a variety of works
a building that houses a collection of books and other materials	request for a sum of money
a collection of literary documents or records kept for reference or borrowing	several things grouped together or considered as a whole
(computing) a collection of standard programs and subroutines that are stored and available for immediate use