The difference between Category and Family
When used as nouns, category means a group, often named or numbered, to which items are assigned based on similarity or defined criteria, whereas family means a group of people who are closely related to one another (by blood, marriage or adoption).
Family is also adjective with the meaning: suitable for children and adults.
check bellow for the other definitions of Category and Family
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Category as a noun:
A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
Examples:
"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."
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Category as a noun (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.
Examples:
"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."
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Family as a noun (countable):
A group of people who are closely related to one another (by blood, marriage or adoption); kin; for example, a set of parents and their children; an immediate family.
Examples:
"Our family lives in town."
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Family as a noun (countable):
An extended family; a group of people who are related to one another by blood or marriage.
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Family as a noun (countable):
A (close-knit) group of people related by blood, friendship, marriage, law, or custom, especially if they live or work together.
Examples:
"crime family'', ''Mafia family'"
"This is my fraternity family at the university."
"Our company is [[one]] [[big]] [[happy]] family."
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Family as a noun (countable, taxonomy):
A rank in the classification of organisms, below order and above genus; a taxon at that rank.
Examples:
"Magnolias belong to the family Magnoliaceae."
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Family as a noun (countable):
Any group or aggregation of things classed together as kindred or related from possessing in common characteristics which distinguish them from other things of the same order.
Examples:
"Doliracetam is a drug from the racetam family."
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Family as a noun (countable, music):
A group of instruments having the same basic method of tone production.
Examples:
"the brass family;  the violin family'"
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Family as a noun (countable, linguistics):
A group of languages believed to have descended from the same ancestral language.
Examples:
"the Indo-European language family;  the Afro-Asiatic language family'"
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Family as a noun:
Examples:
"The dog was kept as a family pet."
"For Apocynaceae, this type of flower is a family characteristic."
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Family as an adjective:
Suitable for children and adults.
Examples:
"It's not good for a date, it's a family restaurant."
"Some animated movies are not just for kids, they are family movies."
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Family as an adjective:
Conservative, traditional.
Examples:
"The cultural struggle is for the survival of family values against all manner of atheistic amorality."
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Family as an adjective (slang):
Homosexual.
Examples:
"I knew he was family when I first met him."