free spirit vs freewheeler

free spirit and freewheeler both are nouns.

Word	Noun	Adjective	Verb	Adverb
free spirit	Yes	No	No	No
freewheeler	Yes	No	No	No

As nouns, free spirit and freewheeler are synonyms defined as:

free spirit and freewheeler: someone acting freely or even irresponsibly

Other synonyms of free spirit include free agent.

free spirit (noun)	freewheeler (noun)
someone acting freely or even irresponsibly	someone acting freely or even irresponsibly