vale vs natural depression

vale and natural depression both are nouns.

Word	Noun	Adjective	Verb	Adverb
vale	Yes	No	No	No
natural depression	Yes	No	No	No

As nouns, natural depression is a hypernym of vale; that is, natural depression is a word with a broader meaning than vale:

vale: a long depression in the surface of the land that usually contains a river
natural depression: a sunken or depressed geological formation

Other hypernyms of vale include depression.

vale (noun)	natural depression (noun)
a long depression in the surface of the land that usually contains a river	a sunken or depressed geological formation