self-aggrandizing vs boastful

self-aggrandizing and boastful both are adjectives.

Word	Noun	Adjective	Verb	Adverb
self-aggrandizing	No	Yes	No	No
boastful	No	Yes	No	No

As adjectives, self-aggrandizing and boastful are synonyms defined as:

Other synonyms of self-aggrandizing include big, braggart, bragging, braggy, cock-a-hoop, crowing, self-aggrandising.

self-aggrandizing (adjective)	boastful (adjective)
of or relating to or characteristic of self-aggrandizement	exhibiting self-importance
exhibiting self-importance