Second-Guessing
There is a mitzvah to recite the berachah of HaMotzi over two loaves of bread on Shabbos. This recalls the double portion of mon that fell on Friday. Does this same mitzvah of lechem mishneh apply on yom tov as well?
Yom Tov
Shabbos Holier Than Yom Tov in the Gemara
In what ways Shabbos is holier than the festivals, as expressed in the Friday-night Amidah, including harsher penalties and stricter laws of work.