The question about 'species of moth' intrigued me because the subject of 'many this of that' reveals something about how we conceptualise unknown quantities. A countable thing (like the number of moths in the whole world) can be regarded as an uncountable entity (since I cannot possibly know the number) and therefore can be regarded, conceptually, as 'mothness'.
In which case I might express 'species of moth' rather than 'moths'.
So I looked at a number of Ngrams and was surprised at the result.
- 75% of people favour 'many kinds of food' over 'many kinds of foods'.
- 75% of people favour 'many kinds of wine' over '... wines'.
- 75% of people favour 'many makes of car' over '... cars'.
But the order reverses for dogs :
- 75% of people favour 'many breeds of dogs' over '... dog'.
I am interested in how we manage global concepts, whether fluid (wine) or disparate (food) or quantised (cars/dogs).
Can anyone suggest why there should be this reversal regarding dogs ?