As nouns the difference between cills and wills
is that cills is plural of cill while Wills is plural of Will|lang=en.
As a proper noun Wills is
a patronymic surname "son of Will".
As a verb wills is
third-person singular of will.
cills
English
Noun
(head)
wills
English
Proper noun
(
en proper noun)
A patronymic surname "son of Will".
transferred from the surname, or a diminutive of William.
Noun
(head)