high muckamuck vs VIP

high muckamuck and VIP both are nouns.

Word	Noun	Adjective	Verb	Adverb
high muckamuck	Yes	No	No	No
VIP	Yes	No	No	No

As nouns, high muckamuck and VIP are synonyms defined as:

high muckamuck and VIP: an important or influential (and often overbearing) person

Other synonyms of high muckamuck include dignitary, high-up, panjandrum, very important person.

high muckamuck (noun)	VIP (noun)
an important or influential (and often overbearing) person	an important or influential (and often overbearing) person