free-liver vs freewheeler

free-liver and freewheeler both are nouns.

Word	Noun	Adjective	Verb	Adverb
free-liver	Yes	No	No	No
freewheeler	Yes	No	No	No

As nouns, freewheeler is a hypernym of free-liver; that is, freewheeler is a word with a broader meaning than free-liver:

free-liver: someone who gratifies physical appetites (especially for food and drink) with more than the usual freedom
freewheeler: someone acting freely or even irresponsibly

Other hypernyms of free-liver include free agent, free spirit.

free-liver (noun)	freewheeler (noun)
someone who gratifies physical appetites (especially for food and drink) with more than the usual freedom	someone acting freely or even irresponsibly