introspection vs examen

introspection and examen both are nouns.

Word	Noun	Adjective	Verb	Adverb
introspection	Yes	No	No	No
examen	Yes	No	No	No

As nouns, examen is a hyponym of introspection; that is, examen is a word with a more specific, narrower meaning than introspection:

introspection: the contemplation of your own thoughts and desires and conduct
examen: a detailed inspection of your conscience (as done daily by Jesuits)

Other hyponyms of introspection include self-analysis, soul-searching, examination.

introspection (noun)	examen (noun)
the contemplation of your own thoughts and desires and conduct	a detailed inspection of your conscience (as done daily by Jesuits)
	a critical study (as of a writer's work)