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+In [Grammar](/wiki/grammar), 'some' functions primarily as a determiner or a pronoun. As a determiner, it precedes a noun, as in 'Some [Animals](/wiki/animal) are nocturnal,' indicating an unspecified number or amount. As a pronoun, it stands alone, replacing a noun phrase, such as 'I have some, but not all,' referring to a portion of a previously mentioned group or substance. This versatility allows for imprecise but effective communication about [Number](/wiki/number) and [Amount](/wiki/amount).