perforation

nouns

a line of small holes for tearing at a particular place
is derived from
is a type of (narrower)
an opening deliberately made in or through something
a hole made in something
"a perforation of the eardrum"
is derived from
is a type of (narrower)
an opening into or through something
the act of punching a hole (especially a row of holes as for ease of separation)
is derived from
is a type of (narrower)
the act of puncturing or perforating