self-aggrandising vs cock-a-hoop

self-aggrandising and cock-a-hoop both are adjectives.

Word	Noun	Adjective	Verb	Adverb
self-aggrandising	No	Yes	No	No
cock-a-hoop	No	Yes	No	No

As adjectives, self-aggrandising and cock-a-hoop are synonyms defined as:

Other synonyms of self-aggrandising include big, boastful, braggart, bragging, braggy, crowing, self-aggrandizing.

self-aggrandising (adjective)	cock-a-hoop (adjective)
of or relating to or characteristic of self-aggrandizement	exhibiting self-importance
exhibiting self-importance