animal starch vs glycogen

animal starch and glycogen both are nouns.

Word	Noun	Adjective	Verb	Adverb
animal starch	Yes	No	No	No
glycogen	Yes	No	No	No

As nouns, animal starch and glycogen are synonyms defined as:

animal starch and glycogen: one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body

animal starch (noun)	glycogen (noun)
one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body	one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body