We often do not use any article before "society". But I've seen a number of situations in which articles have been used before an adjective + "society". I would really appreciate it if someone could let me know what is the reason for this. I mean, is there any grammar rules associated with this?
Examples:-
an egalitarian society
a consumer society
"society" has several meanings and can be both countable and uncountable. When uncountable it of course does not take the indefinite article. However, your examples illustrate a phenomenon whereby a noun that may be uncountable when unmodified becomes countable, or pseudo-countable, and hence can take an indefinite article, when a modifier tells us which kind is meant.
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"society" has several meanings and can be both countable and uncountable. When uncountable it of course does not take the indefinite article. However, your examples illustrate a phenomenon whereby a noun that may be uncountable when unmodified becomes countable, or pseudo-countable, and hence can take an indefinite article, when a modifier tells us which kind is meant. This is a common behavio