observe vs go over

observe and go over both are verbs.

Word	Noun	Adjective	Verb	Adverb
observe	No	No	Yes	No
go over	No	No	Yes	No

As verbs, go over is a hypernym of observe; that is, go over is a word with a broader meaning than observe:

Other hypernyms of observe include check, check into, check out, check over, check up on, look into, suss out.

observe (verb)	go over (verb)
stick to correctly or closely	fall forward and down
make mention of	happen in a particular manner
watch attentively	hold a review (of troops)
observe with care or pay close attention to	examine so as to determine accuracy, quality, or condition
discover or determine the existence, presence, or fact of by perception with the eyes
follow with the eyes or the mind
show respect towards
behave as expected during of holidays or rites
conform one's action or practice to