swollen-headed vs egotistical

swollen-headed and egotistical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
swollen-headed	No	Yes	No	No
egotistical	No	Yes	No	No

As adjectives, swollen-headed and egotistical are synonyms defined as:

swollen-headed and egotistical: characteristic of false pride; having an exaggerated sense of self-importance

Other synonyms of swollen-headed include conceited, egotistic, self-conceited, swollen, vain.

swollen-headed (adjective)	egotistical (adjective)
characteristic of false pride; having an exaggerated sense of self-importance	characteristic of false pride; having an exaggerated sense of self-importance
	characteristic of those having an inflated idea of their own importance