plural of time difference

Different people like different things; there's no accounting for taste.

plural of difference of two squares

plural of electric potential difference

plural of distinction without a difference

plural of set-theoretic difference

A difference between the value of a function evaluated at a number, and the value of the same function evaluated at a different number, a fixed distance from the first.

(idiomatic, intransitive) To carry out an action, the result of which is a significant change, or an altered circumstance. / (idiomatic, intransitive) To be of importance; to matter.

(mathematics) An equation involving an ordered sequence of real numbers (a_nₙ₌₁ ᪲) and some of its differences, where the first difference is defined as 𝛥(a_n)=a_n+1-a_n, and the kᵗʰ difference is defined recursively as 𝛥ᵏ(a_n)=𝛥ᵏ⁻¹(a_n+1)-𝛥ᵏ⁻¹(a_n),.

(attributive) spot the difference