ant lion vs doodlebug

ant lion and doodlebug both are nouns.

Word	Noun	Adjective	Verb	Adverb
ant lion	Yes	No	No	No
doodlebug	Yes	No	No	No

As nouns, ant lion and doodlebug are synonyms defined as:

Other synonyms of ant lion include antlion.

ant lion (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