extrospection vs rumination

extrospection and rumination both are nouns.

Word	Noun	Adjective	Verb	Adverb
extrospection	Yes	No	No	No
rumination	Yes	No	No	No

As nouns, rumination is a hypernym of extrospection; that is, rumination is a word with a broader meaning than extrospection:

extrospection: examination or observation of what is outside oneself, as opposed to introspection.
rumination: a calm, lengthy, intent consideration

Other hypernyms of extrospection include contemplation, musing, reflection, reflexion, thoughtfulness.

extrospection (noun)	rumination (noun)
examination or observation of what is outside oneself, as opposed to introspection.	regurgitation of small amounts of food; seen in some infants after feeding
	(of ruminants) chewing (the cud)
	a calm, lengthy, intent consideration