Nedarim 55: It's All According to the One Who Vows

More on the terms we use. One who swears off "dagan" may include a particular bean, and not just the 5 grains, because of the way that bean is stored. Plus, the story of Mar bar Shmuel and the stipulation in his will. Also, character development for Rava from R. Yosef. Also, swearing off clothing, and the implications for non-garments, and for things made of the same kind of thing as garments, but when it's not garments. Likewise, the implications of carrying on Shabbat for "garments" - namely, if it's not considered carrying, it's considered wearing, and vice versa.