dry land vs physical object

dry land and physical object both are nouns.

Word	Noun	Adjective	Verb	Adverb
dry land	Yes	No	No	No
physical object	Yes	No	No	No

As nouns, physical object is a hypernym of dry land; that is, physical object is a word with a broader meaning than dry land:

dry land: the solid part of the earth's surface
physical object: a tangible and visible entity; an entity that can cast a shadow

Other hypernyms of dry land include object.

dry land (noun)	physical object (noun)
the solid part of the earth's surface	a tangible and visible entity; an entity that can cast a shadow