defective vs malfunctioning

defective and malfunctioning both are adjectives.

Word	Noun	Adjective	Verb	Adverb
defective	No	Yes	No	No
malfunctioning	No	Yes	No	No

defective (adjective)	malfunctioning (adjective)
markedly subnormal in structure or function or intelligence or behavior	not performing or able to perform its regular function
having a defect
not working properly