стоптать v stresses
gen.	tread down; wear out; wear down at the heels; wear down (shoes, heels, etc.)
Gruzovik	wear down at the heels (pf of стаптывать)
Gruzovik, inf.	trample (pf of стаптывать)
inf.	trample
стоптаться v
gen.	become worn down; wear down (of shoes, heels, etc.); wear down at the heels; be worn down (of footwear)
Gruzovik	wear down of footwear (pf of стаптываться); be worn down of footwear (pf of стаптываться)
inf.	trample