amenorrhea vs symptom

amenorrhea and symptom both are nouns.

Word	Noun	Adjective	Verb	Adverb
amenorrhea	Yes	No	No	No
symptom	Yes	No	No	No

As nouns, symptom is a hypernym of amenorrhea; that is, symptom is a word with a broader meaning than amenorrhea:

amenorrhea: absence or suppression of normal menstrual flow
symptom: (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease

amenorrhea (noun)	symptom (noun)
absence or suppression of normal menstrual flow	anything that accompanies X and is regarded as an indication of X's existence
	(medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease