VIP vs dignitary

VIP and dignitary both are nouns.

Word	Noun	Adjective	Verb	Adverb
VIP	Yes	No	No	No
dignitary	Yes	No	No	No

As nouns, VIP and dignitary are synonyms defined as:

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

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

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