megabat vs fruit bat

megabat and fruit bat both are nouns.

Word	Noun	Adjective	Verb	Adverb
megabat	Yes	No	No	No
fruit bat	Yes	No	No	No

As nouns, megabat and fruit bat are synonyms defined as:

megabat and fruit bat: large Old World bat of warm and tropical regions that feeds on fruit

megabat (noun)	fruit bat (noun)
large Old World bat of warm and tropical regions that feeds on fruit	large Old World bat of warm and tropical regions that feeds on fruit