smoothing

verb
  1. 1

    To make smooth or even.

  2. 2

    To make straightforward or easy.

  3. 3

    To calm or palliate.

    โ€œto smooth a person's temperโ€

  4. 4

    (image processing, digital audio) To capture important patterns in the data, while leaving out noise.

  5. 5

    To stroke; especially to stroke an animal's fur.

    โ€œCan I smooth your cat?โ€

noun
  1. 1

    The act by which something is made smooth.

  2. 2

    Monophthongization.

Source: https://en.wiktionary.org/wiki/smooth, https://en.wiktionary.org/wiki/smoothing