Nouns

(n)ruck, herda crowd especially of ordinary or undistinguished persons or things“his brilliance raised him above the ruck”, “the children resembled a fairy herd”
(n)pucker, ruckan irregular fold in an otherwise even surface (as in cloth)

Verbs

(v)pucker, ruck, ruck upbecome wrinkled or drawn together“her lips puckered”