incompetent vs clumsy

incompetent is a noun but clumsy is not a noun.

Word	Noun	Adjective	Verb	Adverb
incompetent	Yes	Yes	No	No
clumsy	No	Yes	No	No

As adjectives, incompetent and clumsy are synonyms defined as:

Other synonyms of incompetent include bungling, fumbling.

incompetent (noun)	clumsy (noun)
someone who is not competent to take effective action

incompetent (adjective)	clumsy (adjective)
not qualified or suited for a purpose	lacking grace in movement or posture
legally not qualified or sufficient	not elegant or graceful in expression
not doing a good job	showing lack of skill or aptitude
not meeting requirements	difficult to handle or manage especially because of shape
showing lack of skill or aptitude