pectin vs cellulose

pectin and cellulose both are nouns.

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

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

pectin: any of various water-soluble colloidal carbohydrates that occur in ripe fruit and vegetables; used in making fruit jellies and jams
cellulose: a polysaccharide that is the chief constituent of all plant tissues and fibers

pectin (noun)	cellulose (noun)
any of various water-soluble colloidal carbohydrates that occur in ripe fruit and vegetables; used in making fruit jellies and jams	a polysaccharide that is the chief constituent of all plant tissues and fibers