piles vs symptom

piles and symptom both are nouns.

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

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

piles: venous swelling external or internal to the anal sphincter
symptom: (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease

piles (noun)	symptom (noun)
a large number or amount	anything that accompanies X and is regarded as an indication of X's existence
venous swelling external or internal to the anal sphincter	(medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease