album vs stamp album

album and stamp album both are nouns.

Word	Noun	Adjective	Verb	Adverb
album	Yes	No	No	No
stamp album	Yes	No	No	No

As nouns, stamp album is a hyponym of album; that is, stamp album is a word with a more specific, narrower meaning than album:

album: a book of blank pages with pockets or envelopes; for organizing photographs or stamp collections etc
stamp album: an album for stamps

Other hyponyms of album include autograph album, phonograph album, record album, photograph album, scrapbook.

album (noun)	stamp album (noun)
a book of blank pages with pockets or envelopes; for organizing photographs or stamp collections etc	an album for stamps
one or more recordings issued together; originally released on 12-inch phonograph records (usually with attractive record covers) and later on cassette audiotape and compact disc