computer expert vs computer guru

computer expert and computer guru both are nouns.

Word	Noun	Adjective	Verb	Adverb
computer expert	Yes	No	No	No
computer guru	Yes	No	No	No

As nouns, computer expert and computer guru are synonyms defined as:

computer expert and computer guru: an authority on computers and computing

computer expert (noun)	computer guru (noun)
an authority on computers and computing	an authority on computers and computing