anhinga vs darter

anhinga and darter both are nouns.

Word	Noun	Adjective	Verb	Adverb
anhinga	Yes	No	No	No
darter	Yes	No	No	No

As nouns, anhinga and darter are synonyms defined as:

anhinga and darter: fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill

Other synonyms of anhinga include snakebird.

anhinga (noun)	darter (noun)
fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill	a person or other animal that moves abruptly and rapidly
	fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill