glycogen vs polysaccharide

glycogen and polysaccharide both are nouns.

Word	Noun	Adjective	Verb	Adverb
glycogen	Yes	No	No	No
polysaccharide	Yes	No	No	No

As nouns, polysaccharide is a hypernym of glycogen; that is, polysaccharide is a word with a broader meaning than glycogen:

glycogen: one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body
polysaccharide: any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules

Other hypernyms of glycogen include polyose.

glycogen (noun)	polysaccharide (noun)
one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body	any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules