differential
dif-fer-en-tial
noun
A significant difference in amounts, rates, or levels between things.
"There is a pay differential between the two jobs."
noun
A gear system in a vehicle allowing wheels to turn at different speeds.
"The car's differential needed repairing."
adjective
Relating to or based on a difference; distinguishing between things or groups.
"They offer differential pricing for students."
Thesaurus
Synonyms: differential gear, derivative, first derivative, derived function, differential coefficient