pyrolysis vs transformation

pyrolysis and transformation both are nouns.

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

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

Other hypernyms of pyrolysis include shift, transmutation.

pyrolysis (noun)	transformation (noun)
transformation of a substance produced by the action of heat	the act of changing in form or shape or appearance
	(genetics) modification of a cell or bacterium by the uptake and incorporation of exogenous DNA
	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