look at vs examine

look at and examine both are verbs.

Word	Noun	Adjective	Verb	Adverb
look at	No	No	Yes	No
examine	No	No	Yes	No

As verbs, examine is a hypernym of look at; that is, examine is a word with a broader meaning than look at:

look at: look at carefully; study mentally
examine: consider in detail and subject to an analysis in order to discover essential features or meaning

Other hypernyms of look at include analyse, analyze, canvass, study.

look at (verb)	examine (verb)
take into consideration for exemplifying purposes	consider in detail and subject to an analysis in order to discover essential features or meaning
look at carefully; study mentally	question closely
	question or examine thoroughly and closely
	observe, check out, and look over carefully or inspect
	put to the test, as for its quality, or give experimental use to