Difference between 'noscitur a sociis' and 'ejusdem generis'
The expression noscitur a sociis simply means that the meaning of a word is to be judged by the company it keeps. "This rule, according to Maxwell, means that, when two or more words which are susceptible of analogous meaning are coupled together they are understood to be used in their cognate sense. They take as it were their colour from each other, that is, the more general is restricted to a sense analogous to a less general. The same rule is thus interpreted in "Words and Phrases" (Vo. XIV, p. 207): "Associated words take their meaning from one another under the doctrine of nosciture a sociis, the philosophy of which is that the meaning of a doubtful word may be ascertained by reference to the meaning of words associated with it; such doctrine is broader than the maxim Ejusdem Generis." In fact the latter maxim "is only an illustration or specific application of the broader maxim noscitur a sociis" - from
When particular words pertaining to a class of genus are followed by general words, the latter, namely, the general words are construed as limited to the things of the same kind as those specified, and this is known as the rule of ejusdem generis reflecting an attempt to reconcile incompatibility between the specified and general words. - from
Nositur a Sociis means that when two words are capable of being analogously defined, then they take colour from each other. The term ejusdem generis is a facet of Nositur a Sociis. The aforesaid principle means that the general words following certain specific words would take colour from the specific words. -