get hold of vs overwhelm

get hold of and overwhelm both are verbs.

Word	Noun	Adjective	Verb	Adverb
get hold of	No	No	Yes	No
overwhelm	No	No	Yes	No

As verbs, overwhelm is a hypernym of get hold of; that is, overwhelm is a word with a broader meaning than get hold of:

Other hypernyms of get hold of include overcome, overpower, overtake, sweep over, whelm.

get hold of (verb)	overwhelm (verb)
affect	charge someone with too many tasks
be in or establish communication with	overcome by superior force
get into one's hands, take physically	cover completely or make imperceptible
	overcome, as with emotions or perceptual stimuli