six-lined racerunner vs race runner

six-lined racerunner and race runner both are nouns.

Word	Noun	Adjective	Verb	Adverb
six-lined racerunner	Yes	No	No	No
race runner	Yes	No	No	No

As nouns, six-lined racerunner and race runner are synonyms defined as:

six-lined racerunner and race runner: very swift lizard of eastern and central United States

Other synonyms of six-lined racerunner include Cnemidophorus sexlineatus, racerunner.

six-lined racerunner (noun)	race runner (noun)
very swift lizard of eastern and central United States	very swift lizard of eastern and central United States