Category vs Hour - What's the difference?
category | hour |
A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
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(mathematics) A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.
A time period of sixty minutes; one twenty-fourth of a day.
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*1661 , , [http://archive.org/stream/a615775104worduoft/a615775104worduoft_djvu.txt The Life of the most learned, reverend and pious Dr. H. Hammond]
*:During the whole time of his abode in the university he generally spent thirteen hours of the day in study; by which assiduity besides an exact dispatch of the whole course of philosophy, he read over in a manner all classic authors that are extant
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*:It is never possible to settle down to the ordinary routine of life at sea until the screw begins to revolve. There is an hour or two, after the passengers have embarked, which is disquieting and fussy.
*{{quote-magazine, date=2014-06-21, volume=411, issue=8892, magazine=(The Economist)
, title=[http://www.economist.com/news/books-and-arts/21604535-real-sir-isaac-newton-was-not-first-king-reason-last Magician’s brain]
, passage=[Isaac Newton] was obsessed with alchemy. He spent hours copying alchemical recipes and trying to replicate them in his laboratory. He believed that the Bible contained numerological codes. The truth is that Newton was very much a product of his time.}}
A season, moment, time or stound.
*(Edgar Allen Poe) (1809-1849), Alone :
*:From childhood's hour I have not been / As others were; I have not seen / As others saw; I could not bring / My passions from a common spring.
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*:Now will be a good hour to show you Milly Erne's grave.
(lb) The time.
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Used after a two-digit hour and a two-digit minute to indicate time.
*T. C. G. James and Sebastian Cox, The Battle of Britain :
*:By 1300 hours the position was fairly clear.
As nouns the difference between category and hour
is that category is a group, often named or numbered, to which items are assigned based on similarity or defined criteria while hour is a time period of sixty minutes; one twenty-fourth of a day.category
English
(wikipedia category)Noun
(categories)- The traditional way of describing the similarities and differences between constituents is to say that they belong to categories'' of various types. Thus, words like ''boy'', ''girl'', ''man'', ''woman'', etc. are traditionally said to belong to the category''' of Nouns, whereas words like ''a'', ''the'', ''this'', and ''that'' are traditionally said to belong to the ' category of Determiners.
- This steep and dangerous climb belongs to the most difficult category .
- I wouldn't put this book in the same category as the author's first novel.
- One well-known category has sets as objects and functions as arrows.
- Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a category consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.