para-, par-

(Greek: by the side of, beside, past, beyond; contrary, wrong, irregular, abnormal)

Any disturbance of speech, especially the utterance of a vocal sound other than the one desired.
1. In physics, an apparent change in the position of an object when the person looking at the object changes position.
2. In astronomy, the angle between two imaginary lines from two different observation points meeting at a star or celestial body that is used to measure its distance from the Earth.
parallel (Literally, "beside each other")
1. In geometry, relating to or being lines, planes, or curved surfaces that are always the same distance apart and therefore never meet.
2. Relating to two things that are comparable because they are similar and share many characteristics.
A polyhedron consisting of six faces that are parallelograms.
1. In writing, the deliberate repetition of particular words or sentence structures for effect.
2. In philosophy, the philosophical theory that mind and body do not interact but follow separate parallel tracks, without any relationship of cause and effect existing between the two.
To make or place parallel to.
A four-sided plane figure in which both pairs of opposite sides are parallel and of equal length, and the opposite angles are equal.
paralogize (verb), paralogizes; paralogized; paralogizing
To draw conclusions or to reason falsely about a given set of beliefs which do not follow good reasoning.
paralogy, paralogia, paralogism
1. False reasoning, involving self-deception.
2. Perverted logic or reasoning in speaking in which the idea that is next in the chain of thought is suppressed and replaced by another that is related to it.