how does an amino acid differ chemically from a simple carbohydrate like glucose?

how does an amino acid differ chemically from a simple carbohydrate like glucose? In their purpose in the body

Carbohydrates and Amino-acids: Structural and Functional Differences CarbohydratesThese may be defined as ‘Poly-hydroxy Aldehydes or Ketones or compounds which producethem on hydrolysis’....