MB vs megabyte

MB and megabyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
MB	Yes	No	No	No
megabyte	Yes	No	No	No

As nouns, MB and megabyte are synonyms defined as:

MB and megabyte: a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes

Other synonyms of MB include M, mebibyte, MiB.

As nouns, MB and megabyte are synonyms defined as:

MB and megabyte: a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes

Other synonyms of MB include M.

MB (noun)	megabyte (noun)
(a British degree) a bachelor's degree in medicine	a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes
a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes	a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes
a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes