free-tailed bat vs microbat

free-tailed bat and microbat both are nouns.

Word	Noun	Adjective	Verb	Adverb
free-tailed bat	Yes	No	No	No
microbat	Yes	No	No	No

As nouns, microbat is a hypernym of free-tailed bat; that is, microbat is a word with a broader meaning than free-tailed bat:

free-tailed bat: small swift insectivorous bat with leathery ears and a long tail; common in warm regions
microbat: typically having large ears and feeding primarily on insects; worldwide in distribution

Other hypernyms of free-tailed bat include carnivorous bat.

free-tailed bat (noun)	microbat (noun)
small swift insectivorous bat with leathery ears and a long tail; common in warm regions	typically having large ears and feeding primarily on insects; worldwide in distribution