handicap vs incapacitate

handicap is a noun but incapacitate is not a noun.

Word	Noun	Adjective	Verb	Adverb
handicap	Yes	No	Yes	No
incapacitate	No	No	Yes	No

As verbs, handicap and incapacitate are synonyms defined as:

Other synonyms of handicap include disable, invalid.

handicap (noun)	incapacitate (noun)
advantage given to a competitor to equalize chances of winning
something immaterial that interferes with or delays action or progress
the condition of being unable to perform as a consequence of physical or mental unfitness

handicap (verb)	incapacitate (verb)
injure permanently	injure permanently
put at a disadvantage	make unable to perform a certain action
attempt to forecast the winner (especially in a horse race) and assign odds for or against a contestant