in pari materia

Etymology
Borrowed from.

Adverb

 * 1) Dealing with the same matter or subject.
 * 2) * 1962, J. L. Austin, How To Do Things With Words (OUP paperback edition, page 113)
 * Furthermore, we seem to derive some assistance from the special nature of acts saying something by contrast with ordinary physical actions: for with these latter even the minimum physical action, which we are seeking to detach from its consequences, is, being a bodily movement, in pari materia with at least many of its immediate and natural consequences, whereas, whatever the immediate and natural consequences of an act of saying something may be, they are at least not normally other further acts of saying something, whether more particular on the speaker's own part or even on the part of others.
 * 1)  A canon of construction holding that the meaning of an ambiguous law can be determined in light of other statutes on the same subject matter.