cellulose vs polysaccharide

cellulose and polysaccharide both are nouns.

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

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

cellulose: a polysaccharide that is the chief constituent of all plant tissues and fibers
polysaccharide: any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules

Other hypernyms of cellulose include polyose.

cellulose (noun)	polysaccharide (noun)
a polysaccharide that is the chief constituent of all plant tissues and fibers	any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules