shudder vs throb

shudder and throb both are nouns.

Word	Noun	Adjective	Verb	Adverb
shudder	Yes	No	Yes	No
throb	Yes	No	Yes	No

As verbs, shudder and throb are synonyms defined as:

Other synonyms of shudder include shiver, thrill.

shudder (noun)	throb (noun)
an involuntary vibration (as if from illness or fear)	an instance of rapid strong pulsation (of the heart)
an almost pleasurable sensation of fright	a deep pulsating type of pain

shudder (verb)	throb (verb)
shake, as from cold	tremble convulsively, as from fear or excitement
tremble convulsively, as from fear or excitement	expand and contract rhythmically; beat rhythmically
	pulsate or pound with abnormal force