throb vs pulse

throb and pulse both are nouns.

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

As nouns, pulse is a hypernym of throb; that is, pulse is a word with a broader meaning than throb:

throb: an instance of rapid strong pulsation (of the heart)
pulse: the rhythmic contraction and expansion of the arteries with each beat of the heart

Other hypernyms of throb include beat, heartbeat, pulsation.

As verbs, throb and pulse are synonyms defined as:

Other synonyms of throb include pulsate.

throb (noun)	pulse (noun)
an instance of rapid strong pulsation (of the heart)	the rhythmic contraction and expansion of the arteries with each beat of the heart
a deep pulsating type of pain	(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
	edible seeds of various pod-bearing plants (peas or beans or lentils etc.)
	the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health

throb (verb)	pulse (verb)
tremble convulsively, as from fear or excitement	produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses
expand and contract rhythmically; beat rhythmically	expand and contract rhythmically; beat rhythmically
pulsate or pound with abnormal force	drive by or as if by pulsation