dig into vs probe

dig into is not a noun while probe is a noun.

Word	Noun	Adjective	Verb	Adverb
dig into	No	No	Yes	No
probe	Yes	No	Yes	No

As verbs, dig into and probe are synonyms defined as:

Other synonyms of dig into include poke into.

dig into (noun)	probe (noun)
	an exploratory action or expedition
	an investigation conducted using a flexible surgical instrument to explore an injury or a body cavity
	a flexible slender surgical instrument with a blunt end that is used to explore wounds or body cavities
	an inquiry into unfamiliar or questionable activities

dig into (verb)	probe (verb)
examine physically with or as if with a probe	question or examine thoroughly and closely
	examine physically with or as if with a probe