extrospection vs musing

extrospection and musing both are nouns.

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

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

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

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

extrospection (noun)	musing (noun)
examination or observation of what is outside oneself, as opposed to introspection.	a calm, lengthy, intent consideration

extrospection (adjective)	musing (adjective)
	deeply or seriously thoughtful