antlion vs doodlebug

antlion and doodlebug both are nouns.

Word	Noun	Adjective	Verb	Adverb
antlion	Yes	No	No	No
doodlebug	Yes	No	No	No

As nouns, antlion and doodlebug are synonyms defined as:

Other synonyms of antlion include ant lion.

antlion (noun)	doodlebug (noun)
winged insect resembling a dragonfly; the larvae (doodlebugs) dig conical pits where they wait to catch e.g. ants	the larva of any of several insects
the larva of any of several insects	a small jet-propelled winged missile that carries a bomb
	a small motor vehicle