shivering vs shiver

shivering and shiver both are nouns.

Word	Noun	Adjective	Verb	Adverb
shivering	Yes	Yes	No	No
shiver	Yes	No	Yes	No

shivering (noun)	shiver (noun)
a sensation of cold that often marks the start of an infection and the development of a fever	a reflex motion caused by cold or fear or excitement
	an almost pleasurable sensation of fright

shivering (adjective)	shiver (adjective)
vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze

shivering (verb)	shiver (verb)
	shake, as from cold
	tremble convulsively, as from fear or excitement