The term 'Ranch Enclosure' is composed of two words, 'PEN' and 'CORRAL'. A PEN is a small enclosed area, usually made of fencing, used to contain animals such as livestock. A CORRAL is a larger enclosure, also made of fencing, used to contain larger animals such as horses. Together, these two words form the term 'Ranch Enclosure', which is an area of land, typically on a ranch, that is enclosed by fencing to contain animals.