"coarse language"
"a crude joke"
"crude behavior"
"an earthy sense of humor"
"a revoltingly gross expletive"
"a vulgar gesture"
"full of language so vulgar it should have been edited"

"the earthy taste of warm milk fresh from the cow"
"earthy smells of new-mown grass"

"an earthy enjoyment of life"

"it had an earthy smell"
"only a little earthy bank separates me from the edge of the ocean"

"has a straightforward down-to-earth approach to a problem"
"her earthy common sense"