MB vs bachelor's degree

MB and bachelor's degree both are nouns.

Word	Noun	Adjective	Verb	Adverb
MB	Yes	No	No	No
bachelor's degree	Yes	No	No	No

As nouns, bachelor's degree is a hypernym of MB; that is, bachelor's degree is a word with a broader meaning than MB:

MB: (a British degree) a bachelor's degree in medicine
bachelor's degree: an academic degree conferred on someone who has successfully completed undergraduate studies

Other hypernyms of MB include baccalaureate.

MB (noun)	bachelor's degree (noun)
(a British degree) a bachelor's degree in medicine	an academic degree conferred on someone who has successfully completed undergraduate studies
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