The difference between Parallel and Perpendicular
When used as nouns, parallel means one of a set of parallel lines, whereas perpendicular means a line or plane that is perpendicular to another.
When used as adjectives, parallel means equally distant from one another at all points, whereas perpendicular means at or forming a right angle (to something).
Parallel is also adverb with the meaning: with a parallel relationship.
Parallel is also verb with the meaning: to construct or place something parallel to something else.
check bellow for the other definitions of Parallel and Perpendicular
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Parallel as an adjective:
Equally distant from one another at all points.
Examples:
"The horizontal lines on my notebook paper are parallel."
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Parallel as an adjective:
Having the same overall direction; the comparison is indicated with "to".
Examples:
"The two railway lines are parallel."
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Parallel as an adjective (hyperbolic geometry, said of a pair of lines):
Either not intersecting, or coinciding.
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Parallel as an adjective (computing):
Involving the processing of multiple tasks at the same time.
Examples:
"a parallel algorithm"
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Parallel as an adverb:
With a parallel relationship.
Examples:
"The road runs parallel to the canal."
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Parallel as a noun:
One of a set of parallel lines.
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Parallel as a noun:
Direction conformable to that of another line.
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Parallel as a noun:
A line of latitude.
Examples:
"The 31st parallel passes through the center of my town."
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Parallel as a noun:
An arrangement of electrical components such that a current flows along two or more paths; see in parallel.
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Parallel as a noun:
Something identical or similar in essential respects.
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Parallel as a noun:
A comparison made; elaborate tracing of similarity.
Examples:
"Johnson's parallel between Dryden and Pope"
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Parallel as a noun (military):
One of a series of long trenches constructed before a besieged fortress, by the besieging force, as a cover for troops supporting the attacking batteries. They are roughly parallel to the line of outer defenses of the fortress.
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Parallel as a noun (printing):
A character consisting of two parallel vertical lines, used in the text to direct attention to a similarly marked note in the margin or at the foot of a page.
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Parallel as a verb:
To construct or place something parallel to something else.
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Parallel as a verb:
Of a path etc: To be parallel to something else.
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Parallel as a verb:
Of a process etc: To be analogous to something else.
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Parallel as a verb:
To compare or liken something to something else.
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Parallel as a verb:
To make to conform to something else in character, motive, aim, etc.
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Parallel as a verb:
To equal; to match; to correspond to.
Examples:
"rfquotek Shakespeare"
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Parallel as a verb:
To produce or adduce as a parallel.
Examples:
"rfquotek John Locke"
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Perpendicular as an adjective (geometry):
at or forming a right angle (to something).
Examples:
"In most houses, the walls are perpendicular to the floor."
"synonyms: normaorthogonal"
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Perpendicular as an adjective:
Exactly upright; extending in a straight line toward the centre of the earth, etc.
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Perpendicular as a noun (geometry):
a line or plane that is perpendicular to another
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Perpendicular as a noun:
a device such as a plumb line that is used in making or marking a perpendicular line