According to Michael Swan Practical grammar book: 3). Nouns can be dropped after less and Fewer if the meaning is clear. e.g - Some people go to church, but less/fewer than 20 years ago. Now, I want to know is the following 'less/fewr' used as 'pronoun' ? And , Is the example equivalent to 'Some people go to church, but less/fewer people than 20 years ago' (in case noun is not dropped) I am not sure whethere it is correct or not. Thanks.