subdivision vs piece of land

subdivision and piece of land both are nouns.

Word	Noun	Adjective	Verb	Adverb
subdivision	Yes	No	No	No
piece of land	Yes	No	No	No

As nouns, piece of land is a hypernym of subdivision; that is, piece of land is a word with a broader meaning than subdivision:

Other hypernyms of subdivision include parcel, parcel of land, piece of ground, tract.

subdivision (noun)	piece of land (noun)
the act of subdividing; division of something previously divided	an extended area of land
a section of a section; a part of a part; i.e., a part of something already divided
a self-contained part of a larger composition (written or musical)
a division of some larger or more complex organization
an area composed of subdivided lots