petabyte vs pebibyte

petabyte and pebibyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
petabyte	Yes	No	No	No
pebibyte	Yes	No	No	No

As nouns, petabyte and pebibyte are synonyms defined as:

petabyte and pebibyte: a unit of information equal to 1024 tebibytes or 2^50 bytes

Other synonyms of petabyte include PB, PiB.

petabyte (noun)	pebibyte (noun)
a unit of information equal to 1024 tebibytes or 2^50 bytes	a unit of information equal to 1024 tebibytes or 2^50 bytes
a unit of information equal to 1000 terabytes or 10^15 bytes