Megillah, Chapter One, Mishnah Six
1) There is no difference between one who is prohibited by vow from benefiting from his fellow and one who is prohibited by vow from [benefiting from] his food, except in the matter of setting foot [on his property] and of vessels which are not used for [preparing] food.
2) There is no difference between vowed offerings and freewill-offerings except that he is responsible for vowed offering but not responsible for freewill-offerings.
Section one: There are two things which are permitted to one who is under a vow not to derive food benefit from his neighbor which are not permitted to one who may not benefit from his neighbor at all: walking on his property and the use of things not involved in the making of food. For more information look at Nedarim 4:1.
Section two: Vowed offerings are stated using the language Behold, I will bring an animal as an offering. If a person sets aside an animal to be a vowed offering and the animal cannot for whatever reason be sacrificed (for instance, it gets lost or dies) he must bring a substitute. However, if he makes a freewill-offering using the language, I will bring this animal as a sacrifice and the animal is lost, he need not bring another. In all other respects, there is no difference between the two types of offerings.