Kiddish vs. Kiddush

Kiddish and Kiddush Definitions
Kiddish
(informal) Childish; immature.
Kiddush
The traditional blessing and prayer recited over wine on the eve of the Sabbath or a festival.
Kiddish
(informal) Of, like, or suitable for a child.
Kiddush
A blessing recited over wine or grape juice in commemoration of the sanctity of the Shabbat or other Jewish holy day.