What do the words "xoxo", "pogonophobia" and "yarn bombing" have in common?

Question

What word's original meaning was to do with the laying of granite chips on the ground and then making it into a hard and smooth surface using a roller?

Answer 1

They are some of the words officially added to the Oxford English Dictionary since 2015
"Xoxo" (kiss hug) was added in 2019; "pogonophobia" (extreme dislike of beards) was added in 2017; "yarn bombing" (covering objects or structures in public places with decorative knitted or crocheted material, as a form of street art) was added in 2015.