glucosamine vs amino group

glucosamine and amino group both are nouns.

Word	Noun	Adjective	Verb	Adverb
glucosamine	Yes	No	No	No
amino group	Yes	No	No	No

As nouns, amino group is a hypernym of glucosamine; that is, amino group is a word with a broader meaning than glucosamine:

glucosamine: an amino derivative of glucose that is a component of many polysaccharides
amino group: the radical -NH2

Other hypernyms of glucosamine include amino, glucose.

glucosamine (noun)	amino group (noun)
an amino derivative of glucose that is a component of many polysaccharides	the radical -NH2