improvement vs transformation

improvement and transformation both are nouns.

Word	Noun	Adjective	Verb	Adverb
improvement	Yes	No	No	No
transformation	Yes	No	No	No

As nouns, transformation is a hypernym of improvement; that is, transformation is a word with a broader meaning than improvement:

Other hypernyms of improvement include shift, transmutation.

improvement (noun)	transformation (noun)
the act of improving something	the act of changing in form or shape or appearance
a change for the better; progress in development	(genetics) modification of a cell or bacterium by the uptake and incorporation of exogenous DNA
a condition superior to an earlier condition	a rule describing the conversion of one syntactic structure into another related syntactic structure
	a qualitative change
	(mathematics) a function that changes the position or direction of the axes of a coordinate system