As nouns the difference between hilling and pilling
is that hilling is the act or process of heaping or drawing earth around plants while pilling is balls of fibre formed on clothing through usage, often called pill or pills.
As a verb pilling is
.
hilling
English
Noun
(
-)
The act or process of heaping or drawing earth around plants.
(
Webster 1913)
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pilling
English
Verb
(head)
Noun
(
en noun)
Balls of fibre formed on clothing through usage, often called pill or pills.