No, 'harnica' isn't a word.
Another name for the Feast of Unleavened Bread is Passover.
Passover already is an English word. The Hebrew word is Pesach.
The Feast of Unleavened Bread The Occasion of our Freedom
Matzo
The Seder.
The Haggadah.
Passover, lenten, paschal, quadragesimal...
Haggadah
Passover
The name of this bread is matzah
Passover
passover