vain vs swollen

vain and swollen both are adjectives.

Word	Noun	Adjective	Verb	Adverb
vain	No	Yes	No	No
swollen	No	Yes	No	No

As adjectives, vain and swollen are synonyms defined as:

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

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

vain (adjective)	swollen (adjective)
characteristic of false pride; having an exaggerated sense of self-importance	characteristic of false pride; having an exaggerated sense of self-importance
unproductive of success	abnormally distended especially by fluids or gas