As nouns the difference between helion and hellion
is that helion is the nucleus of a helium-3 atom while hellion is an unruly, rowdy or mischievous person.
As an adjective hellion is
cursed, ill-fated.
helion
English
See also
*alpha particle
hellion
English
Noun
(
en noun)
an unruly, rowdy or mischievous person
an evil person
the larva of the
Adjective
(-)
cursed, ill-fated