noradrenaline vs catecholamine

noradrenaline and catecholamine both are nouns.

Word	Noun	Adjective	Verb	Adverb
noradrenaline	Yes	No	No	No
catecholamine	Yes	No	No	No

As nouns, catecholamine is a hypernym of noradrenaline; that is, catecholamine is a word with a broader meaning than noradrenaline:

noradrenaline: a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
catecholamine: any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland

Other hypernyms of noradrenaline include pressor, vasoconstrictive, vasoconstrictor, monoamine neurotransmitter.

noradrenaline (noun)	catecholamine (noun)
a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses	any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland