The tractate Sukkah treats the laws of the festival of Sukkot: the validity of the booth (dimensions, sekhakh covering, materials), the four species (lulav, etrog, hadas, aravah), the Temple rites, and the celebration of the Beth HaShoevah.
The tractate Gittin (Bills of Divorce) treats the get: the formal requirements of its writing, signing, and delivery, its validity, agency and conditions, the reforms of Rabban Gamliel, and the norms safeguarding civil peace and social order.