middle distance vs prospect

middle distance and prospect both are nouns.

Word	Noun	Adjective	Verb	Adverb
middle distance	Yes	No	No	No
prospect	Yes	No	Yes	No

As nouns, prospect is a hypernym of middle distance; that is, prospect is a word with a broader meaning than middle distance:

middle distance: the part of a scene between the foreground and the background
prospect: the visual percept of a region

Other hypernyms of middle distance include aspect, panorama, scene, view, vista.

middle distance (noun)	prospect (noun)
the part of a scene between the foreground and the background	a prediction of the course of a disease
	the visual percept of a region
	belief about (or mental picture of) the future
	someone who is considered for something (for an office or prize or honor etc.)
	the possibility of future success

middle distance (verb)	prospect (verb)
	explore for useful or valuable things or substances, such as minerals
	search for something desirable