doodlebug vs ant lion

doodlebug and ant lion both are nouns.

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

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

Other synonyms of doodlebug include antlion.

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