differential cost vs incremental cost

differential cost and incremental cost both are nouns.

Word	Noun	Adjective	Verb	Adverb
differential cost	Yes	No	No	No
incremental cost	Yes	No	No	No

As nouns, differential cost and incremental cost are synonyms defined as:

differential cost and incremental cost: the increase or decrease in costs as a result of one more or one less unit of output

Other synonyms of differential cost include marginal cost.

differential cost (noun)	incremental cost (noun)
the increase or decrease in costs as a result of one more or one less unit of output	the increase or decrease in costs as a result of one more or one less unit of output