self-aggrandizement vs ego trip

self-aggrandizement and ego trip both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-aggrandizement	Yes	No	No	No
ego trip	Yes	No	No	No

As nouns, self-aggrandizement and ego trip are synonyms defined as:

self-aggrandizement and ego trip: an act undertaken to increase your own power and influence or to draw attention to your own importance

Other synonyms of self-aggrandizement include self-aggrandisement.

self-aggrandizement (noun)	ego trip (noun)
an act undertaken to increase your own power and influence or to draw attention to your own importance	an act undertaken to increase your own power and influence or to draw attention to your own importance