antlion vs ant lion

antlion and ant lion both are nouns.

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

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

antlion and ant lion: winged insect resembling a dragonfly; the larvae (doodlebugs) dig conical pits where they wait to catch e.g. ants

Other synonyms of antlion include antlion fly.

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

Other synonyms of antlion include doodlebug.

antlion (noun)	ant lion (noun)
winged insect resembling a dragonfly; the larvae (doodlebugs) dig conical pits where they wait to catch e.g. ants	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