ego trip vs self-aggrandisement

ego trip and self-aggrandisement both are nouns.

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

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

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

Other synonyms of ego trip include self-aggrandizement.

ego trip (noun)	self-aggrandisement (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