Dichotomy
Part of speech: noun
Definition: A cutting in two; a division. Division or distribution of genera into two species; division into two subordinate parts. The phase of the moon in which it appears bisected, or shows only half its disk, as at the quadratures. Successive division and subdivision, as of a stem of a plant or a vein of the body, into two parts as it proceeds from its origin; successive bifurcation. The place where a stem or vein is forked. Division into two; especially, the division of a class into two subclasses opposed to each other by contradiction, as the division of the term man into white and not white. conditions perceived as polar extremes or opposites an either-or perspective
Binary
Part of speech: noun
Definition: The bijective base-2 numeral system, which uses only the digits 0 and 1.An executable computer file.A star system consisting of only two stars.
Part of speech: adjective
Definition: Being in a state of one of two mutually exclusive conditions such as on or off, true or false, presence or absence of a signal.Concerning logic whose subject matter concerns binary states.Concerning numbers and calculations using the binary number system.Having two equally important parts; related to something with two parts.Of an operation, function, procedure or logic gate, taking exactly one operand, argument, parameter or input; having domain of dimension 2.Of data, consisting of arbitrary values; that is, not interpretable as plain or ASCII text.