incentive vs bonus

incentive and bonus both are nouns.

Word	Noun	Adjective	Verb	Adverb
incentive	Yes	No	No	No
bonus	Yes	No	No	No

As nouns, incentive and bonus are synonyms defined as:

incentive and bonus: an additional payment (or other remuneration) to employees as a means of increasing output

incentive (noun)	bonus (noun)
a positive motivational influence	anything that tends to arouse
an additional payment (or other remuneration) to employees as a means of increasing output	an additional payment (or other remuneration) to employees as a means of increasing output