cracking vs fracture

cracking and fracture both are nouns.

Word	Noun	Adjective	Verb	Adverb
cracking	Yes	Yes	No	No
fracture	Yes	No	Yes	No

As nouns, cracking and fracture are synonyms defined as:

Other synonyms of cracking include crack.

cracking (noun)	fracture (noun)
the act of cracking something	the act of cracking something
a sudden sharp noise	(geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)	breaking of hard tissue such as bone

cracking (adjective)	fracture (adjective)
excellent