slump vs worsening

slump and worsening both are nouns.

Word	Noun	Adjective	Verb	Adverb
slump	Yes	No	Yes	No
worsening	Yes	Yes	No	No

As nouns, worsening is a hypernym of slump; that is, worsening is a word with a broader meaning than slump:

Other hypernyms of slump include declension, decline in quality, deterioration.

slump (noun)	worsening (noun)
a noticeable deterioration in performance or quality	changing something with the result that it becomes worse
a long-term economic state characterized by unemployment and low prices and low levels of trade and investment	process of changing to an inferior state

slump (adjective)	worsening (adjective)
	changing for the worse

slump (verb)	worsening (verb)
fall heavily or suddenly; decline markedly
fall or sink heavily
assume a drooping posture or carriage
fall in value