earthy vs down-to-earth

earthy and down-to-earth both are adjectives.

Word	Noun	Adjective	Verb	Adverb
earthy	No	Yes	No	No
down-to-earth	No	Yes	No	No

As adjectives, earthy and down-to-earth are synonyms defined as:

earthy (adjective)	down-to-earth (adjective)
of or consisting of or resembling earth	sensible and practical
conspicuously and tastelessly indecent
not far removed from or suggestive of nature
sensible and practical
hearty and lusty