outcrop vs outcropping

outcrop and outcropping both are nouns.

Word	Noun	Adjective	Verb	Adverb
outcrop	Yes	No	Yes	No
outcropping	Yes	No	No	No

As nouns, outcrop and outcropping are synonyms defined as:

outcrop and outcropping: the part of a rock formation that appears above the surface of the surrounding land

Other synonyms of outcrop include rock outcrop.

outcrop (noun)	outcropping (noun)
the part of a rock formation that appears above the surface of the surrounding land	the part of a rock formation that appears above the surface of the surrounding land

outcrop (verb)	outcropping (verb)
appear on the surface, come to the surface on the ground