glycine vs aminoalkanoic acid

glycine and aminoalkanoic acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
glycine	Yes	No	No	No
aminoalkanoic acid	Yes	No	No	No

As nouns, aminoalkanoic acid is a hypernym of glycine; that is, aminoalkanoic acid is a word with a broader meaning than glycine:

glycine: the simplest amino acid found in proteins and the principal amino acid in sugar cane
aminoalkanoic acid: organic compounds containing an amino group and a carboxylic acid group

Other hypernyms of glycine include amino acid.

glycine (noun)	aminoalkanoic acid (noun)
the simplest amino acid found in proteins and the principal amino acid in sugar cane	organic compounds containing an amino group and a carboxylic acid group