parcel of land vs piece of ground

parcel of land and piece of ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
parcel of land	Yes	No	No	No
piece of ground	Yes	No	No	No

As nouns, parcel of land and piece of ground are synonyms defined as:

Other synonyms of parcel of land include parcel, piece of land, tract.

parcel of land (noun)	piece of ground (noun)
an extended area of land	an extended area of land