cape vs solid ground

cape and solid ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
cape	Yes	No	No	No
solid ground	Yes	No	No	No

As nouns, solid ground is a hypernym of cape; that is, solid ground is a word with a broader meaning than cape:

Other hypernyms of cape include dry land, earth, ground, land, terra firma.

cape (noun)	solid ground (noun)
a sleeveless garment like a cloak but shorter	the solid part of the earth's surface
a strip of land projecting into a body of water