retrospect vs contemplation

retrospect and contemplation both are nouns.

Word	Noun	Adjective	Verb	Adverb
retrospect	Yes	No	Yes	No
contemplation	Yes	No	No	No

As nouns, contemplation is a hypernym of retrospect; that is, contemplation is a word with a broader meaning than retrospect:

Other hypernyms of retrospect include musing, reflection, reflexion, rumination, thoughtfulness.

retrospect (noun)	contemplation (noun)
contemplation of things past	a long and thoughtful observation
	a calm, lengthy, intent consideration

retrospect (verb)	contemplation (verb)
look back upon (a period of time, sequence of events); remember