Last Will and Testament: WILL or TESTAMENT. The legal declaration of a man’s intentions of what he wills to be performed after his death. Co. Litt. 111; Swinb. Pt. 1, s. II. 1; Shep. Touch. 398; Bac. Abr. Wills, A.
2. The terms will and testament are synonymous, and they are used indifferently by common lawyers, or one for the other. Swinb. p. 1, s. 1. 5; Bac. Ab. Wills. A. Civilians use the term testament only. See Testament.
3. There are five essential requisites to make a good will.
continue reading: http://ask.aboutlaw.com/2017/12/will-or-testament.html