insulin vs hypoglycaemic agent

insulin and hypoglycaemic agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
insulin	Yes	No	No	No
hypoglycaemic agent	Yes	No	No	No

As nouns, hypoglycaemic agent is a hypernym of insulin; that is, hypoglycaemic agent is a word with a broader meaning than insulin:

insulin: hormone secreted by the isles of Langerhans in the pancreas; regulates storage of glycogen in the liver and accelerates oxidation of sugar in cells
hypoglycaemic agent: any of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitus

Other hypernyms of insulin include endocrine, hormone, internal secretion, hypoglycemic agent.

insulin (noun)	hypoglycaemic agent (noun)
hormone secreted by the isles of Langerhans in the pancreas; regulates storage of glycogen in the liver and accelerates oxidation of sugar in cells	any of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitus