crystal mike vs mic

crystal mike and mic both are nouns.

Word	Noun	Adjective	Verb	Adverb
crystal mike	Yes	No	No	No
mic	Yes	No	No	No

As nouns, mic is a hypernym of crystal mike; that is, mic is a word with a broader meaning than crystal mike:

crystal mike: a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage
mic: device for converting sound waves into electrical energy

Other hypernyms of crystal mike include microphone, mike.

crystal mike (noun)	mic (noun)
a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage	device for converting sound waves into electrical energy