IX. It is further to be observed that many words have a variety of acceptations, some more limited and others more extensive; which may be owing either to the application of a general name to a particular class of things, as in the words kindred and adoption; or to the use of masculines to express animals both of the male and female kind, where nouns of a common gender are wanting. In terms of art too, words are often taken in a metaphorical or extended sense: thus in the civil law death signifies banishment; but in its popular acceptation a dissolution of the parts of the natural body. X. In promises likewise, some things are of a favourable, some an odious, and others of a mixed or indifferent description. Favourable promises are those which contain an equality of terms, or which bear some relation to the common good, the magnitude and extent of which increases the favour of the promise: so that all engagements more conducive to peace than to war are to be considered as those of a favourable complexion, and alliances for mutual defence are always regarded as a more laudable object than those for offensive war. Treaties of an odious kind are those which lay greater burdens on one party than on the other, which contain penalties for non-performance, or which lead to an abrogation or infraction of former treaties. Whereas, though engagements of a mixed nature may create a deviation from former treaties, they may be taken either in a favourable or odious light, according to the magnitude, or object of the change produced. If it be for the sake of peace, it is better, taking all circumstances into consideration, to rank them with those of a favourable kind. XI. The distinction made by the Roman law between acts of equity and those of strict justice, cannot GENERALLY be applied to the law of nations, though it may in some cases be adopted. Thus in any transaction between the subjects of two countries, in each of which the same form of legal proceeding is observed, the parties are supposed to treat without any intention of deviating from the common rule and form, unless they have expressly determined to the contrary. But in acts for which no common rule is prescribed, as in donations and free promises, there the parties are supposed to treat according to the strict letter of the agreement.