handicap vs handicapper

handicap and handicapper both are nouns.

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

handicap (noun)	handicapper (noun)
advantage given to a competitor to equalize chances of winning	someone who sets the betting odds based on calculations of the outcome of a contest (especially a horse race)
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)	handicapper (verb)
injure permanently
put at a disadvantage
attempt to forecast the winner (especially in a horse race) and assign odds for or against a contestant